I am installing the Kenwood 107mr remote on the transom of our boat. The remotes are bigger than the factory remotes that came with the boat so I had to enlarge the holes slighty to get it to fit. It wasn't too bad but kinda nerve racking when dealing with the actual fiberglass. Anyways, I am wanting to see what kind of sealant I should use to finish it up. I want to make sure and get a nice water tight seal on it.