Bottom Job / Barrier Coat
Done the barrier coat thing. Sanded the entire bottom wih a 4 1/2 inch angle grinder with 7 inch metal oxide sanding discs I purchased from Home Depot in 36 grit and 50 grit. This is a very messy way to do it but it works well once you get the hang of it (be very very careful or youl be doing more fairing than it''s worth). As for the barrier coat I ALWAYS use 3M fine line film tape for the waterline and for varnish work. This is the light green stuff it''s expensive but if you want a fine line with no bleed through this is the way to go. You MUST peel the tape off before each coat of barrier epoxy sets up or it WILL take chunks off with it. Good luck!