This is one of the best parts of boat building, when you see the actual shape of the boat for the first time. This assembly is done upside-down. At this point the boat is setting on the ends of the stem and the transom framing, bottom up, and is pretty stable. I notch the butt blocks for the chines, then fit them into place and bore for fastenings. This is another wrestling match, especially after everything fits and you cover the contact areas with slippery , black glue.
Disposable gloves come in handy here.
After the glue cures, it is time to fair the chines, keeping both sides the same height and the proper curve in the bottom. Now it's time to put the bottom on. I cut the panels a little large, and fair the whole bottom after it is permanently screwed and glued. At this point it is a boat, and would float if you put it in the water, but there are a few things left to do before you can actually launch. One of those things is to turn the boat over .