Well, I used a DIY bedliner on the floor of the S-10 body. I ended up not getting Herculiner, went with one made by Dupli-Color. BIG mistake! I went with it because of a couple things, first, it could be sprayed and second, they said it could go over clean bare metal. All that led me to thinkt hat spraying it over sandblasted metal would be fine. Like the country singer said, "WRONG!" The stuff dried to a brittle consistency, very thin coating (I put a gallon on 34 sg. ft. and got no real film buildup) It was showing rust in the thin spots, which were all over the place, it was almost is if if it wasn't a lump in the texture it was so thin it couldn't keep water out. I peeled it with my thumbnail. Good stuff indeed. Dupli-Color will be getting a nastygram over this product. It looks like a lot of scraping and try again, but I think I'll go commercially applied liner, I'm a little gunshy about DIY products right now.