I have a 15' fiberglass hull and have only had it in the water a handfull of times (salt water). You can see a stain where the waterline is, it is discolored. Does anyone know what will take that off without messing up the finish?
Re: How do you remove salt water stains on the side of the boat?
Starbrite hull cleaner or Mary Kate on/off hull cleaner. I use a 1/4 cup of Starbrite to 1 gallon of water and spray it on using a garden sprayer. Works almost instantly.