Stumbled upon this.
 

Not sure if anyone has posted this but I thought it was a bit interesting, I have never heard or seen of it. Might have to get me a boat now. Listen carefully as they speak of the speed controller. 22.2 volts and waterproof.

http://www.youtube.com/watch?v=6JFw0Dr4fUw

Shucks I was only about two weeks late!

Sorry for the double thread, I got too excited to search.

It would be a shame of they just stick two vxl systems in it spinning one spur.