With all due respect..... 6 foot is a number that is thrown around pretty casually but I doubt that too many people here would be very excited about running 90mph plus in true 6 foot conditions. I live on an inlet to the atlantic ocean and have been out in 6 footers with a 7 second interval a few times in the last few weeks. I'll give you a good look at my twin steps on the way by. I think the only thing speedmasters are good for are keeping together for the guys that cant throttle!!!