oldbluesplayer,
Thanks for your input.
In response to your first comment, one thing I didn’t mention is that I took out the inner skin from about 2” below the lower edge of the liner, out and down to the sides and bottom of the hull. When I removed the wood core, I found that the layer of matt and WR were not attached along the bottom of the hull, or to the end of either major stringer (note that the picture was taken before I removed the matt/WR from the end of the starb’rd stringer).
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So, essentially, I will be glassing the lower portion of the inside face of the inner layer of Penske Board to the sides and bottom of the hull. I am also planning on a knee between the center stringer and the transom, and, perhaps, 2 more to connect the sides of the main stringers to the transom.
Regarding the glass, I was under the impression that the core really only acted as a filler (in principal, anyway) and that the real strength came from the makeup and thickness of the skin. Using my planned lay-up of alternating layers of 1708 and 1808, I can probably only get 4 layers of glass on the outside (about 3/16”+) without running into fairing issues. That’s why and when I started to think about a thicker lay-up in the center portion of the transom.