Solar powered fans

Anybody have a source for a good solar powered fan I can use to circulate the air a bit? I generally leave the boat in the slip ~3-4 days week or so. I try to dry it as well as I can and bring the wet stuff home with me but it seems like it is a little hot an humid in there whenever I take the cover off.

It would be great if I could fabricate a solar fan that would move the hot, humid air out from under the cover.

Later

Bakes

http://www.nextag.com/solar-powered-fan/shop-html

http://www.northerntool.com/webapp/wcs/stores/servlet/category_6970_770399+6228+789695

http://www.earthtechproducts.com/p198.html?gdftrk=gdfV2538_a_7c634_a_7c2295_a_7cp19 8

http://www.overtons.com/modperl/product/details.cgi?r=view&i=72310

I saw those as well. The Vent-sol-air is kind of what I am looking for but it gets horrible reviews. The other ones appear to be more aligned with the sailboat cabin thing and would require a lot of fab work to get to work with a towable canvas cover.

What would be sweet would be a fan that mounts through the transom and uses solar energy from a flexible solar panel attached to the cover.

Maybe I should start looking for a high quality through transom ventilation fitting then engineer up a way to vent the engine compartment from it. If I opened the 4" deck plate while covered it should draw air through the cover, into the bilge (through the deck plate), through the engine compartment and out the back.

Bakes

Here is nice one.

http://www.bilgewizard.com/bilge.php