Patent ID: 7736205

Claim:
A system for propulsion of a watercraft having a deck, the system comprising: a foot engaging cam plate having a pedal portion above the deck and a plate portion below the deck, said plate portion slidingly engaging a lower surface of the watercraft, the plate portion further having at least one cam means for engaging a cam follower of a fin bar, and said foot engaging cam plate having an interconnecting structural portion joining the plate portion and the pedal portion, said interconnecting structural portion projecting thru an opening in the deck of the watercraft, at least one fin bar, the at least one fin bar comprised of a forward bar portion, and an aft bar portion, the at least one fin bar further having a fin coupled to the aft bar portion, the fin being substantially vertical, and the at least one fin bar further having a pivot engaging aperture in the forward fin bar portion, and a cam follower in a portion of the fin bar, the cam follower of the at least one fin bar operatively engaging one cam means in said plate portion of said foot engaging cam plate, at least one aperture thru at least the deck, at least one pivot coupling the at least one fin bar to the at least one aperture thru at least the deck; whereby, a user may thrust with a leg or, both legs in unison upon the pedal of the cam plate and affect an activating horizontal movement of the cam and generate a sweep of the at least one fin bar across the beam of the craft, deflecting the fin in the water, and propelling the watercraft.