Quote Originally Posted by haugy View Post
Ummmmm, I'm not sure about that one. The yellowing barely came off with 600 grit paper. Is your yellow just grime, or faded sun damaged gelcoat? What would it do to vinyl if it dripped on it? Or rubber? Alot of the yellowing is around my dash area.
My boat was yellow/brown on the very bottom. I wet-sanded it with 600 grit and it didn't come out. 5 minutes with the hull cleaner and it looked brand new.

My trailer is in pretty good shape. I don't think the hull cleaner has ever damaged it. Not sure what it would do to vinyl but it seems fairly mild until you brush it.

I use a brush like this on a 6-foot handle. Makes the whole project take about 6 minutes (5 of those are waiting before I hose it off.)

http://www.boatingsolutions.com/8-Wi...0905C1381.aspx