Okay... Karen, I'll answer this... I've been accused of being the silicone police!
Silicone on molded trailers is a temporary fix that can end up being a permanent problem. Once used, is seems nothing wants to stick to the residue that's left behind when it's removed. You can't see that residue or feel it. It's almost like it becomes "one" with the gelcoat. Everyone here on FiberglassRV (are ya listening!) wants your effort and everyone elses to have value and we try to point you to other products that are just as easy to use but don't cause problems down the road. That's it in a nutshell. I've read/seen folks that have a "tiny" leak and slather on that Devil's Goop with what looks like a 2" paint
brush. I want to cry... if they'd only asked, we could have told them about a "proper" caulk that works just as easily, is just as inexpensive and won't be difficult to remove/replace or cause problems.
Does this help?