[elhigh]

Originally Posted by NoCO2

otherwise I'll just move to plan B which was this plastic sheet stuff I found at home depot that's used to cover overhead florescent lights.

That stuff has next to no integrity - just installing them in light fixtures is a crapshoot. Sure it's light, but it's really brittle. A little too much flexure or one pebble, and there goes your wheelskirt. If that takes place on the road and a fragment causes damage to another car, you're liable.

I've been wondering about foamboard myself. Coroplast requires I find a sign shop, but foamboard is at every Staples and Office Max. It's a little pricier, but I have experience working foamboard. Break out the X-Acto!