...........................Thank you gentlemen!!!!!!!!!!! I will try the MASTER painters way!!! How long do I let it set on there????? and do I just wipe it off or will I need to scrape it???EZ- OFF. It can be used on paint also as long as your carefull and the paint job has clear on it.... Mask off around the #'s so as not to get the oven cleaner where you don't need it. I would try the EZ-OFF before colorsanding. You never know how much clear or color is on your boat and you don't want to break through. Never..And I mean NEVER use lacquer thinner / acetone on a paint job to remove #'s. This softens the paint and can ruin your paint job. Gelcoat yes. Paint NO!!!!