Could the chainplates be built into the hull during the layup rather than attaching them after?

This build technique could work with any size cat right? I mean up to a certain point but anything under 20 feet? It doesn't seem like it will be as much works as building a ply boat, but I wonder if the results will be as good. I mean Ply boats win alot of races, so will this boat be able to?

Also how many layers of fiberglass did you use on the inside and outside?

Once you go cat you never go back! Nacra 5.2 (Elsies)#1499, running an inter17 spin!