Combining NASA-proven winglet technology with sailing’s America’s Cup-proven hydrodynamics principles, the Wavegrinder (TM) surfboard fin (patent 7244157) helps surfers surf faster, for longer, catch more waves, and maneuver better than conventional fins.  If winglets work for NASA and Boeing, why not for you?

Existing surfboard fin technology has evolved little.  But the hydrodynamically engineered  CAD-designed, USA-made Wavegrinder fin uses a proven NACA foil, combined with proven NASA winglets, in a high-aspect-ratio, low-sweepback angle, short-root profile, having a small-surface-area shape that creates high lift with low drag over a wide range of angles of attack.   

Currently configured to fit standard center fin boxes on longboard surfboards in a one or three-fin setup, design adaptations are in the works for longboard side fins, for shortboard surfboard thruster fins, and for both windsurfers and kiteboards.   

Stop losing great waves by a half-stroke!  Turn without stalling and losing waves!