Any auto store will have fiberglass repair kits that will make a perfect patch (even if the surface isn't fiberglass!). But, the real challenge will be finding paint to match. It took me a long time to find something to match when I had to patch a hole in mine. And no, Jayco apparently does not share color information with anyone! I tried, both via my dealer, and by calling direct.
2012 Ford F-150 Eco, Max/Max
Jayco 26.5 RLS, Reese Sidewinder