I've been fascinated with this sport for quite awhile. I don't know if you've ever seen this or not, but it'* insane. YouTube - Jetsprint Boat Racing 2008 Rnd 1
The water is only 3' deep and the channels are no wider than 12'. The course length varies, and its a race against the clock and other competitors. These boats run about 16' in length and have between 500 and 1000hp motors. The driver and navigator typically experience 3 to 7 g'* in cornering. On the track they average about 80mph, but in open water they can reach speeds of 125mph.
The sport started in New Zealand and is slowly making it'* way across the globe.
wicked back seat view of driver and navigator. Don't watch if you have motion sickness!