I remember a spring day at Chapin many years ago when everything was 40....air temp, water temp, and wind speed. You couldn't pay me enough to do that now....
I have a like new Loft 10.8 listed in the Iwindsurf classified for $125 that could be just what your buddy needs. Have a look in the freeride sail section
Interesting that almost no one is talking about the effect of kites on all this. I've been windsurfing for 25+ years, but my sweetheart is a kiter so I've been spending more time with that community. ...