Robby Naish (pronounced "nash") is definitely at least one of the greatest U.S. windsurfing pioneers and all-around watermen. Here is a classic 1995 movie of and by Robby in Hawaii, where he lives. A GREAT 44 minutes. (I'm not sure why they use the "RIP" logo. Robby is alive and well.)
This is Bill vdB, sharing little vignettes of windsurfing on Sayers Lake, in Howard PA. and sometimes elsewhere.