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A pitch plow and method of laying flexible pipe in ground includes drawing a pitch plow with respect to the ground, the pitch plow having a frame and a shank pivotally mounted to a frame at a pivot, said shank defining a cutting edge. The shank is oriented relative to earth horizontal causing a chan

A pitch plow and method of laying flexible pipe in ground includes drawing a pitch plow with respect to the ground, the pitch plow having a frame and a shank pivotally mounted to a frame at a pivot, said shank defining a cutting edge. The shank is oriented relative to earth horizontal causing a change in the elevation of the cutting edge. Flexible pipe is fed through a boot extending generally along the shank. The flexible pipe is fed at an in-feed at an upper portion of the boot and discharged at a discharge at a lower portion thereof. The discharge is generally aligned with a vertical axis passing through the pivot in order to minimize vertical movement of the discharge as the shank pivots about the pivot.

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1. A pitch plow, comprising: a frame;a shank pivotally mounted to said frame at a pitch pivot, said shank defining a cutting edge, wherein an orientation of said shank relative to earth causing a change in the elevation of said cutting edge such that depth of the pitch plow is controlled by pitch wi

1. A pitch plow, comprising: a frame;a shank pivotally mounted to said frame at a pitch pivot, said shank defining a cutting edge, wherein an orientation of said shank relative to earth causing a change in the elevation of said cutting edge such that depth of the pitch plow is controlled by pitch with rotation in a first direction at the pitch pivot increasing depth of the pitch plow and rotation in a second direction opposite of the first direction at the pitch pivot decreasing depth of the pitch plow; anda boot extending generally along said shank, said boot having an in-feed at an upper portion thereof and a discharge at a lower portion thereof, wherein said boot includes a generally straight central portion extending downwardly and forwardly and a curve portion between said straight central portion and said discharge, wherein the curved portion extends downwardly and rearwardly from the generally straight central portion;wherein in a depth decreasing position, said discharge is positioned such that a vertical axis, said vertical axis perpendicular with earth horizontal, passing through said pitch pivot and said generally straight central portion of the boot is rearward of the discharge when the shank is pivoted to decrease depth of the pitch plow;wherein in a depth increasing position, said discharge is positioned such that the vertical axis passing through said pitch pivot and said generally straight central portion of the boot is forward of the discharge when the shank is pivoted to increase depth of the pitch plow. 2. The pitch plow as claimed in claim 1, wherein said curved portion defines an arc that is greater than or equal to 90 degrees. 3. The pitch plow as claimed in claim 1 wherein said boot defines an arc that is greater than or equal to 90 degrees. 4. The pitch plow as claimed in claim 1 including an actuator between said shank and said frame. 5. The pitch plow as claimed in claim 4 wherein said actuator is operated by at least one chosen from a manual control and an automatic control. 6. The pitch plow of claim 1 wherein said discharge moves no more than approximately 3 inches on one side of the vertical axis and no more than approximately 3 inches on the other side of the vertical axis while maintaining grade. 7. The pitch plow of claim 1 wherein said boot defines an arc that is greater than or equal to 90 degrees. 8. The pitch plow of claim 1 wherein drainage conduit moving from the in-feed to the discharge experiences a change in direction of 90 degrees or more. 9. A pitch plow, comprising: a frame;a shank pivotally mounted to said frame at a pitch pivot, said shank defining a cutting edge, wherein an orientation of said shank relative to earth causing a change in the elevation of said cutting edge; anda boot extending generally along said shank, said boot having an in-feed at an upper portion thereof and a discharge at a lower portion thereof, wherein said discharge is generally aligned with a vertical axis passing through said pitch pivot in order to minimize vertical movement of said discharge as said shank pivots about said pitch pivot; andwherein said boot defines an arc that is greater than or equal to 90 degrees;wherein said discharge moves in a horizontal range of between no more than approximately 3 inches on one side of the vertical axis and no more than approximately 3 inches on the other side of the vertical axis while maintaining grade. 10. A pitch plow, comprising: a frame;a shank pivotally mounted to said frame at a pitch pivot, said shank defining a cutting edge, wherein an orientation of said shank relative to earth causing a change in the elevation of said cutting edge; anda boot extending generally along said shank, said boot having an in-feed at an upper portion thereof and a discharge at a lower portion thereof, wherein said discharge is generally aligned with a vertical axis passing through said pitch pivot in order to minimize vertical movement of said discharge as said shank pivots about said pitch pivot; andwherein said discharge moves in a horizontal range of between no more than approximately 3 inches on one side of the vertical axis and no more than approximately 3 inches on the other side of the vertical axis while maintaining grade. 11. A method of laying flexible pipe in ground, comprising: drawing a pitch plow with respect to the ground, the pitch plow comprising (a) a frame;(b) a shank pivotally mounted to said frame at a pitch pivot, said shank defining a cutting edge, wherein an orientation of said shank relative to earth causing a change in the elevation of the cutting edge such that depth of the pitch plow is controlled by pitch with rotation in a first direction at the pitch pivot increasing depth of the pitch plow and rotation in a second direction opposite of the first direction at the pitch pivot decresing depth of the pitch plow; (c) a boot extending generally along the shank, the boot having an in-feed at an upper portion thereof and a discharge at a lower portion thereof, wherein said boot includes a generally straight central portion extending downwardly and forwardly and a curved potion between said straight central portion and said discharge, wherein the curved portion extends downwardly and rearwardly from the generally straight central portion; (d) an actuator between the shank and the frame, the actuator causing the shank to pivot about the frame: (e) wherein in a depth decreasing position, said discharge is positioned such that a vertical axis, said vertical axis perpendicular with earth horizontal, passing through said pitch pivot and said generally straight central portion of the boot is rearward of the discharge when the shank is pivoted to decrease depth of the pitch plow; (f) wherein in a depth increasing position, said discharge is positioned such that the vertical axis passing through said pitch pivot and said generally straight central portion of the boot is forward of the discharge when the shank is pivoted to increase depth of the pitch plow;orienting said shank relative to earth horizontal causing a change in the elevation of said cutting edge; andfeeding flexible pipe through a boot extending generally along said shank, including feeding the flexible pipe at an in-feed at an upper portion of the boot and discharging the flexible pipe at a discharge at a lower portion thereof, including generally aligning the discharge with a vertical axis passing through said pitch pivot n order to minimize vertical movement of said discharge as said shank pivots about said pitch pivot. 12. The method as claimed in claim 11 wherein said curved portion defines an arc that is greater than or equal to 90 degrees. 13. The method as claimed in claim 11 wherein said boot defines an arc that is greater than or equal to 90 degrees. 14. The method as claimed in claim 11 including controlling orientation of said shank relative to earth horizontal in order to control the elevation of said cutting edge. 15. The method as claimed in claim 14 including controlling orientation of said shank by at least one chosen from manual control and automatic control. 16. A method of laying flexible pipe in ground, comprising: drawing a pitch plow with respect to the ground, the pitch plow having a frame and a shank pivotally mounted to said frame at a pitch pivot, said shank dermining a cutting edge;orienting said shank relative to earth horizontal causing a change in the elevation of said cutting edge; andfeeding flexible pies through a boot extending generally along said shank, including feeding the flexible pipe at an in-feed at an upper portion of the boot and discharging the flexible pipe at a discharge at a lower portion thereof, including generally aligning the discharge with a vertical axis passing through said pitch pivot in order to minimize vertical movement of said discharge as said shank pivots about said pitch pivot; andincluding moving said discharge in a horizontal range of between no more than approximately 3 inches on one side of the vertical axis and no more than approximately 3 inches on the other side of the vertical axis while maintaining grade;wherein said boot defines an arc that is greater than or equal to 90 degrees. 17. A method of laying flexible pipe in ground, comprising: drawing a pitch plow with respect to the ground, the pitch plow having a frame and a shank pivotally mounted to said frame at a pitch pivot, said shank defining a cutting edge;orienting said shank relative to earth horizontal causing a change in the elevation of said cutting edge; andfeeding flexible pipe through a boot extending generally along said shank, including feeding the flexible pipe at an in-feed at an upper portion of the boot and discharging the flexible pipe at a discharge at a lower portion thereof, including generally aligning the discharge with a vertical axis through said pitch pivot in order to minimize vertical movement of said discharge as said shank pivots about said pitch pivot, including moving said discharge in a horizontal range of between no more than approximately 3 inches on one side of the vertical axis and no more than approximately 3 inches on the other side of the vertical axis while maintaining grade. 18. A pitch plow, comprising: a frame;a shank pivotally mounted to said frame at a pitch pivot, said shank defining a cutting edge, wherein an orientation of said shank relative to earth causing a change in the elevation of the cutting edge;a boot extending generally along the shank, the boot having an in-feed at an upper portion thereof and a discharge at a lower portion thereof;an actuator between the shank and the frame, the actuator causing the shank to pivot about the frame causing the cutting edge to increase in elevation to a depth decreasing position or decrease in elevation to a depth increasing position; anda skid plate on the shank;wherein when the skid plate on the shank is perpendicular to a vertical axis passing through the pivot, the discharge is aligned with the vertical axis to thereby minimize vertical movement of said discharge as said shank pivots about said pitch pivot. 19. The pitch plow of claim 18 wherein said boot includes a generally straight central portion extending downwardly and forwardly and a curved portion between said straight central portion and said discharge, wherein the curved portion extends downwardly and rearwardly from the generally straight central portion. 20. The pitch plow of claim 19 wherein in the depth decreasing position, said discharge is positioned such that a vertical axis, said vertical axis perpendicular with earth horizontal, passing through said pitch pivot and said generally straight central portion of the boot is rearward of the discharge when the shank is pivoted to decrease depth of the pitch plow. 21. The pitch plow of claim 20 wherein in the depth increasing position, said discharge is positioned such that the vertical axis passing through said pitch pivot and said generally straight central portion of the boot is forward of the discharge when the shank is pivoted to increase depth of the pitch plow. 22. The pitch plow of claim 19 wherein in the depth increasing position, said discharge is positioned such that the vertical axis passing through said pitch pivot and said generally straight central portion of the boot is forward of the discharge when the shank is pivoted to increase depth of the pitch plow. 23. The pitch plow of claim 18 wherein said discharge moves no more than approximately 3 inches on one side of the vertical axis and no more than approximately 3 inches on the other side of the vertical axis while maintaining grade. 24. The pitch plow of claim 18 wherein said boot defines an arc that is greater than or equal to 90 degrees. 25. The pitch plow of claim 18 wherein drainage conduit moving from the in-feed to the discharge experiences a change in direction of 90 degrees or more. 26. A pitch plow, comprising: a frame;a shank pivotally mounted to said frame at a pitch pivot, said shank defining a cutting edge, wherein an orientation of said shank relative to earth causing a change in the elevation of the cutting edge such that depth of the pitch plow is controlled by pitch with rotation in a first direction at the pitch pivot increasing depth of the pitch plow and rotation in a second direction opposite of the first direction at the pitch pivot decreasing depth of the pitch plow;a boot extending generally along the shank, the boot having an in-feed at an upper portion thereof and a discharge at a lower portion thereof, wherein said boot includes a generally straight central portion extending downwardly and forwardly and a curved portion between said straight central portion and said discharge, wherein the curved portion extends downwardly and rearwardly from the generally straight central portion;an actuator between the shank and the frame, the actuator causing the shank to pivot about the frame;wherein in a depth decreasing position, said discharge is positioned such that a vertical axis, said vertical axis perpendicular with earth horizontal, passing through said pitch pivot and said generally straight central portion of the hoot is rearward of the discharge when the shank is pivoted to decrease depth of the pitch plow;wherein in a depth increasing position, said discharge is positioned such that the vertical axis passing through said pitch pivot and said generally straight central portion of the boot is forward of the discharge when the shank is pivoted to increase depth of the pitch plow. 27. The pitch plow of claim 26 wherein said actuator is operated by at least one chosen from a manual control and an automatic control. 28. The pitch plow of claim 26 wherein said discharge moves no more than approximately 3 inches on one side of the vertical axis and no more than approximately 3 inches on the other side of the v ical axis while maintaining grade. 29. The pitch plow of claim 26 wherein said boot defines an arc that is greater than or equal to 90 degrees. 30. The pitch plow of claim 26 wherein drainage conduit moving from the in-feed to the discharge experiences a change in direction of 90 degrees or more. 31. An agricultural pitch plow for installing underground flexible pipe, comprising: a frame;a shank pivotally mounted to said frame at a pitch pivot, said shank defining a cutting edge, wherein an orientation of said shank relative to earth causing a change in the elevation of the cutting edge such that depth of the agricultural pitch plow is controlled by pitch with rotation in a first direction at the pitch pivot increasing depth of the agricultural pitch plow and rotation in a second direction opposite of the first direction at the pitch pivot decreasing depth of the agricultural pitch plow;a boot extending generally along the shank, the boot having an in-feed at an upper portion thereof and a discharge at a lower portion thereof;an actuator between the shank and the frame, the actuator causing the shank to pivot about the frame;wherein said boot defines a path for the flexible pipe traveling therethrough from the in-feed to the discharge such that the flexible pipe experiences a change in direction of 90 degrees or more through the boot;wherein said discharge moves in a horizontal range of between no more than approximately 3 inches on one side of a vertical axis and no more than approximately 3 inches on an opposite side of the vertical axis while maintaining grade. 32. A method of laying flexible pipe in ground, comprising: drawing a pitch plow with respect to the ground, the pitch plow comprising (a) a frame; (b) a shank pivotally mounted to said frame at a pitch pivot, said shank defining a cutting edge, wherein an orientation of said shank relative to earth causing a change in the elevation of the cutting edge such that depth of the pitch plow is controlled by pitch with rotation in a first direction at the pitch pivot increasing depth of the pitch plow and rotation in a second direction opposite of the first direction at the pitch pivot decreasing depth of the pitch plow; (c) a boot extending generally along the shank, the boot having an in-feed at an upper portion thereof and a discharge at a lower portion thereof orienting said shank relative to earth horizontal causing a change in the elevation of said cutting edge, wherein said boot includes a generally straight central portion extending downwardly and forwardly and a curved portion between said straight central portion and said discharge, wherein the curved portion extends downwardly and rearwardly from the generally straight central portion;feeding flexible pipe through a hoot extending generally along said shank, including feeding the flexible pipe at an in-feed at an upper portion of the boot and discharging the flexible pipe at a discharge at a lower portion thereof, including generally aligning the discharge with a vertical axis passing through said pitch pivot in order to minimize vertical movement of said discharge as said shank pivots about said pitch pivot; andpivoting the shank at the pitch pivot to a depth decreasing position such that the discharge is positioned such that a vertical axis perpendicular with earth horizontal passes through the pitch pivot and said generally straight central portion of the boot is rearward of the discharge in the depth decreasing position.