I did, this time, use the spreader sticks of the recommended size in the hull, after glassing the interior. It may have helped a little, but the hull still shrank.
I resorted to using the spreader sticks, tethered with strings, to spread the hull. Oddly, the hull was wider than the deck, near the bow. I resorted to using two Big "ol Clamps to pull it back together:
This time, instead of using the pre-made 9 oz. tape, I made a long 2" strip of 4 oz. glass for the inside seam. The usual scramble to wet it out with epoxy.