http://www.northerntool.com/shop/tools/product_200514329_200514329?cm_mmc=Aggregates-_-Shopping-_-Alternative + Renewable Energy>Solar Panels + Accessories-_-24976
Sunforce Universal Surface Solar panel mounts. I got them on Ebay for less, but just looked and don't see that available. These are neat because you can remove the panels anytime by unscrewing the top clamps, which don't screw into the roof, but into the more permanently mounted brackets that the clamps mate to.
Hope that helps. I couldn't find any metal mounts that I would like to have digging against the roof with every big bump. These spread out the load quite a bit.
My initial plan of the self sticking flexible panels was ruled out by sensible comments on this forum regarding heat buildup, access, future repairs, etc.
