Wow, am jealous.
Beautiful work there 4runner. A question though, never having done a stitch and glue boat, but are you going to put 1xsomething on top (flush with the top on the inside of the hatch) of the bulkheads before decking it?
The Briggs Dory uses ribs, which require said wood to hold them apart, but it seems ply is a little flimsy laterally, especially in a flip type situation where gear would crash into the bulkhead, and possibly break the glue joint ?
Sorry, I are an engineer LOL! Enquiring minds and all.
Here's an image of the Briggs under construction to illustrate what I probably pooched in the explanation, at least I THINK I attached it..