I'm thinkin about painting the very bottom of my bumpers and my rocker panels in that bedliner paint to keep them from getting busted up and scratched up. Does anyone know if this stuff will even stick to fiberglass or not?

you should be asking if bedliner paint sticks to plastic not fiberglass.

OK, I dunno wth these things are made out of, lol.

When you spray bedliner on your truck it sticks to the paint, not the bare metal. So theres no reason why it wouldnt stick to the paint of your rockers.

OK, thanks!

I have it in my wheelwells where the tire sandblasts the paint. Right in front and behind the tires. It'* held up pretty well for 2 years.