windsock
Adventurer
So how fine did you sand before painting?? 220 grit enough?
It was so long ago now I cannot remember the exact grit number. We got it to the smooth stage with no visible sanding marks. Possibly around the 120 - 180 mark. We then two-pot gloss coated it to a fine finish then used cutting paste and polish head for the final polish. These were open water cruising sailboats up to 42' long. This was from the water line up. Water line down was finished in antifoul so a gloss finish wasn't necessary.
Are you using an idiot board? Long lengths of sand paper remove a lot of material for a marginal increase in effort.