How about a string of jet engines set up on shore, with diffusers to spread out the wind a bit...

BTW, I totally agree with the Eco Challenge idea. That was actually floated for the Volvo race, we went to a few meet and greets with Ken Read and his media guys. They had said that they were trying to film as much as possible and wrap it into a package, not unlike Eco Challenge and Deadliest Catch.

Mike