The main bulkheads are then fixed to one panel, stood up and the other panel is fixed to them. Pull the bow together and then the stern to the transom. Square up diagonally the main bulkheads and brace. Fit chine stringers and measure and fit remaining bulkheads(cut two at once of everything so both hulls are the same)Fit and cut bottom panel (two again)Now make and fit keels (you could fit daggerboards if you prefer but I believe the long flat surface of the chine gives lateral resistance) as it is easier without the chine panel. Now fit and cut chine panels (four this time) Glass and finish then flip. Fit pre-made crossbeams and do internal fitout then do cabin/decks/hatches etc.