You've got to be pretty well forwards towards the section of the hull with the most rocker. Hans can get these things to tack pretty fast! Of course, with all that sail you've got you could just about tack it with one hull still out of the water....

That G-Force 21 Grand Prix beats up on all the boats at the Olympic Triangle races held in the bay. He finishes the race, furls the jib, and has a drink while waiting for everyone to finish. Hardly ever has to get out on the trapeze wire, either...