Andrew I just caught the part of your post where you had several coats. The boat in question had what is normal wear, a little more near the boards.Out of the molds with a dump gun you could get 10mils and more I think,so what is adequate really.Does several coats equate to when I open the deck ports and look in I should not be able read the catsailor in there?Would that be a good gauge as to how much gelcoat the bottom needs.I ask these questions only as a self-check of the obvious thanks all for your responses....Bob