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A fin plug assembly to receive and engage a fin includes a cavity, a cam with gears, and a worm gear. The fin plug assembly allows a quick and easy fore-aft adjustment of the fin. Disclosed also is a method of installing the fin plug assembly in a surfboard using a one-piece complete control jig sys

A fin plug assembly to receive and engage a fin includes a cavity, a cam with gears, and a worm gear. The fin plug assembly allows a quick and easy fore-aft adjustment of the fin. Disclosed also is a method of installing the fin plug assembly in a surfboard using a one-piece complete control jig system including the step of providing additional structural strength by removing and/or spiking the foam material in the body of the surfboard.

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1. A method of installing a fin plug assembly in a surfboard comprising:positioning a control jig system on a lower surface of said surfboard where said fin plug assembly is to be embedded;removing a center portion of said control jig system;creating a mounting cavity within said surfboard, said mou

1. A method of installing a fin plug assembly in a surfboard comprising:positioning a control jig system on a lower surface of said surfboard where said fin plug assembly is to be embedded;removing a center portion of said control jig system;creating a mounting cavity within said surfboard, said mounting cavity having a substantially same shape and size as said center portion;positioning said fin plug assembly within said mounting cavity, wherein said fin plug assembly has a plurality of supporting arms;removing depth cut outs of said control jig system;aligning and positioning said supporting arms of said fin plug assembly into said depth cut outs;filling said mounting cavity with a resin; andsanding off said control jig system, a top surface and said supporting arms of said fin plug assembly. 2. A method of claim 1, further comprising fitting a dummy fin into said fin plug assembly. 3. A method of claim 1, further comprising placing a variable amount of putty into said depth cut outs and adjusting a vertical tilt angle of said fin plug assembly. 4. A method of claim 1, wherein said center portion and said depth cut outs are pre-cut. 5. A method of claim 1, wherein said center portion is in a substantially same shape as an outline of said fin plug assembly. 6. A method of claim 1, further comprising removing materials extending from said mounting cavity and creating a space for said resin to fill. 7. A method of claim 6, said space extends substantially to a skin of an upper surface of said surfboard. 8. A method of claim 1, further comprising spiking and compressing materials extending from said mounting cavity. 9. A method of claim 8, said spiking extends substantially to a skin of an upper surface of said surfboard. 10. A method of adapting a surfboard to couple to a fin having a tab, the method comprising:forming a mounting cavity within the surfboard guided by a control jig system where the tab of the fin is to be embedded;spiking material which extends beyond the mounting cavity so as to form at least one spiked cavity extending from the mounting cavity;positioning a fin plug assembly within the mounting cavity at a predetermined depth, where the fin plug assembly is adapted to receive the tab of the fin;coupling the fin plug assembly to the surfboard; andsmoothing the surface of the surfboard until the fin plug assembly is substantially flush with the surface of the surfboard. 11. The method according to claim 10, further including:removing additional material from the surfboard in addition to the mounting cavity to provide additional space between the fin plug assembly and an upper surface of the surfboard; andfilling the additional space with resin to couple the fin plug assembly to the surfboard. 12. The method according to claim 10, where the fin plug assembly has a plurality of supporting arms, and further including:seating the supporting arms upon the lower surface of the surfboard to place the fin plug assembly at the predetermined depth within the mounting cavity. 13. The method according to claim 10, where the control jig system has a center portion that defines the outline for the mounting cavity, and further including:removing the center portion from the control jig system to guide in the forming of the mounting cavity. 14. The method according to claim 10, where the step of smoothing is done by sanding the surface of the surfboard. 15. The method according to claim 10, further comprising fitting a dummy fin into the fin plug assembly to align the fin plug assembly into the mounting cavity. 16. The method according to claim 10, further comprising placing a variable amount of putty adjacent to the control jig system; andadjusting a vertical tilt angle of the fin plug assembly. 17. The method according to claim 10, where the surfboard has a skin on an upper surface of the surfboard, where the step of spiking extends substantially to the skin of the upper surface of the surfboard. 18. A method of installing a fin plug assembly having a plurality of supporting arms, in a surfboard, the method comprising:positioning a control jig system having a cut-out center portion with a plurality of depth cut-outs extending from the cut-out center portion, on a lower surface of the surfboard where the fin plug assembly is to be embedded, the depth cut-outs being adapted to receive said supporting arms;creating a mounting cavity within the surfboard, where the mounting cavity has a profile that is substantially similar to the profile of the cut-out center portion;positioning the fin plug assembly within the mounting cavity so that the plurality of supporting arms are received within the depth cut-outs and seated upon the lower surface of the surfboard;filling the mounting cavity with a resin; andremoving the control jig system and any protruding resin and the protruding portion of the fin plug assembly so that the lower surface of the surfboard is substantially smooth. 19. The method according to claim 18, where the step of removing is done by sanding. 20. The method according to claim 18, further comprising fitting a dummy fin into said fin plug assembly. 21. The method according to claim 18, further comprising placing a variable amount of putty into said depth cut outs and adjusting a vertical tilt angle of said fin plug assembly. 22. The method according to claim 18, where the cut-out center portion and the depth cut-outs are pre-cut. 23. The method according to claim 18, said cut-out center portion is in a substantially same shape as an outline of said fin plug assembly. 24. The method according to claim 18, further comprising removing materials extending from the mounting cavity and creating a space for the resin to fill. 25. The method according to claim 24, wherein the space extends substantially to a skin of an upper surface of the surfboard. 26. A method of claim 18, further comprising spiking and compressing materials extending from said mounting cavity.