I remember reading somewhere where woodonglass said rustoleum with a hardener added was good for painting inside the boat. I bought cheap topside paint to paint the inside over the new fiberglass work I did before installing the carpet. But I'm not going to have enough. The boat paint is a one part and runs 50 a gallon and rustoleum is 20-30 I'm not looking for pretty I'm just looking to cover and help seal everything before putting down carpet