Why, that the latest and greatest
Cyclone 2000 , gauranteed to whistle up some wind for any boat carrying it! It's an excellent training device (especially for crews in predominately light-wind areas), but not class-legal. It seems the Voodoo Engineer stopped making them when the price of steel went up due to the Chinese building another planet

As such, there aren't enough to outfit all the Olypic racers.
They have their downsides though, as the price of these units is $1k each, plus some hair and clothing samples from each of the crew. While it's not a lot of monetary output, you have to be prepared to burst into flames at any moment.