So, it looks like the only wood in this boat is the transom and a strip up the center covering the V in the hull. The sides have foam from top to bottom. I cut away part of the kickpanel in the back to confirm this. There is some wet foam at the bottom of the kick panel. Is it essential to cut out the kickpanel on both sides to get to the wet foam to remove it? It's not more than an inch or two of wet foam along the bottom of the 1.5 ft. long kick panel. I'd like to leave it so I don't have to rebuild the kickpanels. Doesn't seem like that work is justified by that small amount of wet foam.
If I repair the kickpanel as it is, I plan to install the transom, fill any large voids with Tyvek insulated foamboard pieces, PB over that, and then 1708. What's the largest gap advisable to fill with PB?