May I make a suggestion to use an ablative anti fouling paint. Last about three years when you put on three coats or more and the cost will offset the OLD FASHION method not to say you don't have to deal with prepping and painting along with additional coats of paint that don't go away!
I guess you will have to get it soda blasted then start with Inter protect
primer then Micron. But I think you will agree its the way to go.
