Surfboards by Hydrodynamica
Surfboards by Hydrodynamica, The Mini-Simmons Dual Keel Planing Hull, The Simster Tri Fin Planing Hull, The Fourke Quad Planing Hull, The Ekstrom Asymmetrical Planing Hull, Bob Simmons, John Elwell, Carl Ekstrom, Richard Kenvin, Larry Gebhart, Larry Mabil