P.C_simpson said...
Schweitzer and Drake definately, they invented the universal.
Hmmm, they didn't exactly invent the universal...many cars run them in steering and driveshafts and have for many years prior to windsurfing. But I get what you mean.
Actually Doyle used a uni joint on his kit as he was the first to work out you could turn a rudderless craft just by moving the sail forward and back.