Windsurfer achieves his top speed in a hurricane like blow doing maybe 100 % or 140 % of the windspeed.

The cats are achieving their record speeds at wind somewhere around 10-15 knots doing over 3 times the windspeed.

That is efficiency mate ! From a technological point of view the cats are a shitload more interesting.

I always wondered why somebody just doesn't take our a large chute in a Katrina and claim the all out speed record body surfing in 80 knots winds.

Wouter