For all technology geeks, here is a 2 hour long very informative and open "podcast" of the current speed record holder Paul Larsen. He also talks about the new record attempts with kite boats (goes on with bridle drag) and shows the foil profiles used where he goes really into detail how they had to think outside of the box to trick cavitation and ventilation (not to confuse!) among other nasty side effects of sailing beyond 60 knots.
A must watch for every engineer/technical kite geek!
Best regards Niklas