1) Sand surface with 80-grit sandpaper.
2) Remove sanding residue by wiping with a rag dampened with Dewaxer.
3) Repair imperfections with KBS NuFill Epoxy Filler. Sand and wipe clean again with Dewaxer.
4) Apply the first coat of antifouling thinned 10% with Blue Water Reducer/Solvent.
5) Apply at least two more coats of antifouling (unthinned), allowing the appropriate dry times.