Re: rustoleum
I painted my small boat with Rustoleum (you can see picture below). It was white, now it's gray. Mostly, just to cover up the 800 sticker stains that were on it, but it has held up so far.
The boat is flat-fronted, and it rubbed off on one of my many brushes against the dock, but I think I may have not waited long enough before putting the boat in the water.