[Public-List] Painting below water line

[Dwayne Back]

I started to sand the bottom paint this year in preparation of a couple of new coats and noticed some areas that there was adhesion failure.  I began scraping and found that there was a general adhesion failure.  I have scraped about 1/2 the boat and find that ~10% scrapes all the way to the gel coat in various spots with the remainder being covered by what look like 1-2 coats of an unknown paint type that appears to adhere reasonably well. I purchased Micron CSC (fresh water boat), before I discovered adhesion failure, which is supposed to be compatible with a wide variety of paints.  My questions are whether it is best to just sand and paint as is, or would it be better to sand all the way down to the gel coat and start fresh?  Should I do anything extra to protect the exposed gel coat?   If I sanded all the way to the gel coat could I do more damage than good?  Thanks for the feedback.

Dwayne
#94