I tried the spray on stuff but any effect it had washed away. Think the slicks scared me for fear I would scratch the hull. Did add a couple rollers on the centerline. Susan is just negative on outboards, Glad I did not buy a new 200 hp Chapperal or Glassply although a V-6 OB on a 20' hull would suit me. So now I have 2 boats and just have to get out in them.