We have a brand new 19', delivered a couple weeks ago. Based on the dialog on the forum about 303, I picked some up at the local Camping World.
I washed the trailer, squeaky clean, then applied the 303 per the directions. Interesting, for each type of application it prompts you to "wipe completly dry" or for fiberglass, "wipe immediately dry"…. so I did.
Disappointing.
This morning in the bright sunlight (note - it was cloudy yesterday, perfect conditions for "not in direct sunlight" application) there are streaks and it seems to be missing a real "polished" feel.
I take cleaning / protecting / polishing seriously, having rode motorcycles all my life and having found a number of highly performing chemicals over time.
I was expecting the finish to have a "slick" or polished feel and certainly no streaks, having "wiped immediately dry"… actually buffed it a bit.
It certainly sprayed on easily and it's better than fiberglass without any protective film applied, but I'm not sure what all the excitement is about. Maybe the UV protection is the main thing, over a polished finish?
Sorry, not a fan…