Try using snobol toilet cleaner. Its cheap and simple to use. Just wipe it on and leave it alone for about 5 min. and rinse. Not sure what kind of film you have. My hulls are white and they get a orangeish color after a while. The snobol makes them look like new. My other boat was painted white imron and it worked fine without harming the paint. Be carful though, use gloves and don't breath the fumes.....acid. Oh yea, it works great on toilets!



Mike