For the rebuild, I used Polyumac panels. I bought it all at once from the factory, so they gave me wholesale pricing. I paid less than half what the equivalent Coosa, NidaCore and Divinycell would have cost. It was all built with epoxy and mostly 1708 fiberglass. To see what I used in the following photos, they are:
Gatorboard - grey
15# foam - tan
6# foam - green
honeycomb - white
On the teardown, I was amazed at how little wood was left in the transom. I was able to scoop out more than half the plywood using my hand. It was the consistency of wet shredded wheat.
I replaced the tank and support a couple years earlier, so I left those in place.
I had areas where the stringers were loose and weeping water, so I cut sections out of the tops and removed all the old foam. The stern 3' or so had steel discs in it, so I ended up cutting those sections of the stringers completely out to get rid of it. I pulled about 200# of steel out of the stringers. I glassed the stringers back down and formed new stringer sections with foam. New 2# foam was poured into the stringers and other below deck sections that were going to stay inaccessible.
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