A good sandblaster removes the rust along with the paint. He gets it out of the pits as well. You might want to have the guy redo them? Then you need to fill with body filler, block sand and primer. Then re-sand before paint and possible touch up bad areas, re-primer and re-sand. It is not easy or quick to achieve a fine finish. Rustoleum will not stop rust, only cover it up until it reappears. You can paint it with Rustoleum with a brush, over the rust, if that is the look you want? I get the feeling that you know all the answers to your questions but are looking for an easy way? Use common sense and do whatever you want. Personally, I try to do it right from the start? Paul
www.severngaspumps.com 
