For eight years on Lake Erie every spring I would add a coat of hard modified-epoxy anti-fouling, usually Petit's Trinidad SR. In 2008 while laying over in NC I had a yard sand away most of that. I switched to an ablative for what I thought would be many years in salt water. Now back on Lake Erie I wonder what you guys and gals are using in an ablative. The Petit gave me excellent results and is hard and fast. But I am done sanding every spring. I will stay with an ablative.