Hi guys,
I think the windsurfing guys have done it simply because they have spent more time refining technique than equipment. I could be wrong, but the boards & sails haven`t changed much in the last 2 years. Small refinements, not quantum leaps.
The specialised craft guys have to spend a lot of time & money just designing and building the thing, and have to do lots of computer predictions on how fast the thing SHOULD go, before they even get it on the water.
I`m sure one of them will get the record back, as has been said before, they are sailing at double windspeed or more, so can attempt records in lighter wind which should mean less breakdowns. The advantage the board guys have here is that the equipment seldom breaks, it`s the sailors that do if they fall !

To me, there`s a greater level of personal acchievement for the guy who is hanging on at the ragged edge, rather than sitting in a **** with a windscreen and some levers to fiddle with. No discredit meant to the specialised craft sailors, for it takes special skills to drive those things too.

Cheers
Steve