restoring faded front cap

Thanks guys. I guess I should have provided more info. I have a 2007 Forest River Surveyor 255RS travel trailer. The front cap I referred to (maybe I misused that term) is just the front of the trailer -- basically a flat sloped piece of fiberglass. I gets cooked by the sun and the fiberglass is faded and chalky. I am considering the process I linked in my original post. Looking for any thoughts on if this is a good process, or if there are newer or better processes or products out there to bring the fiberglass back to life.