Why are you insistent on the gelcoat
? It is below the waterline - forget about it. Just patch and paint
with bottom paint
. The only reason gelcoat
was ever used below your waterline was that it was easier to make the boat in the mold
that way. Other than that, there is no reason to have gelcoat below the waterline.
Neilpride is correct - if you have not done this work before (and you don't say how large of a repair it is or exactly where it is located), you may end up right where you started on this.
Frankly, if you have a previous repair that is leaking, then you may have a larger issue. Did the PO just shove some goo stick or bondo in there, or did they lay glass? If the former, then you just need to fix it correctly. If the latter, then you need to understand why it is continuing to fail.
As far as the epoxy/polyester thing goes, you won't find many of us on this forum saying polyester is OK in this application - but those few of us all seem to be on this thread! You may want to duck out for a bit while the epoxy-heads all have a go at you...