lol guys. The reasons I asked is because:

1. What I want isn't being offered in Urethane. :sad: Urethane can be permanently damaged with a 10+mph hit.
2. I want something flex enough to survive scraping, hence why I look toward FRP.
3. Something that can easily mod/repair small section, hence fiberglass.

What I'm concern is that I don't have experience with FRP, so I don't know how hard to work/mod on it. Nor how much more flexible it is compared to fiberglass.