Redoing the stringers on a 82 19-6 center console..I have already cut out the wet foam and refoamed the stringers. My question is this , how many layers of 17oz glass do I need to go over the tops of the stringers to reattach them.I cut the tops off and they are back on top of the new foam. I will be adding a layer of ply on top of the reglassed tops to raise the height a little more to get it closer to the floor bottom and it will be glassed also. Just trying not to put to much or not enough..Thanks