My personal record is only 28 knots on my raceboard. I'd like to try out one of those speed boards, looks fun. Can you ride it back upwind after the speed run, or do you have to walk?
You might want to try a higher aspect ratio kite for faster speeds. The Renegade is fairly low aspect ratio. If you like the Epic kites, I'd bet the Screamer would get you going faster, or better yet, the Epic Racer.
I know I really notice the difference on my raceboard when comparing riding a lower aspect ratio Best Kahoona (similar to the Renegade) vs the high aspect ratio Dynos (similar to the Epic Racers). The high aspect ratio kites are much better at taking advantage of the apparent wind.
Does Rob Douglas ride crossbows? Or switchblades?
You can tack both ways on the race board no problem. I used the Screamer & tried the racer last year at the World Speed Championships but this stability and pull of the Renegade worked way better for me. I'm sure everyone has a personal preference. To ride the speed board you need to be extremely over powered and that particular 9m Renegade to me is a very powerful kite much more pull then the Screamer. (I can only use it for freestyle in less then 16 knots.) The racer would be a great kite for course racing but just did not work with speed, it was too unstable in the gusts. I'm also sponsored by Epic.
I believe Rob rides Switchblades.