A program on Discovery, I think 'Destroyed in Seconds', has shown some of these kite surfers jumping obstructions - - - and wiping out as well. Losing their grips and falling onto land, swinging into light poles and other obstructions, things like that. Makes me think some of those people are either masochistic or suicidal.
And my wife thinks we're nuts playing with little toy airplanes.
BTW, I still haven't beenable to connect with the link after about 6 tries since first seeeing the post.