Let's get creative! Cat in less than 200h.

The skin-on-frame method can be made as strong and rigid as you want, especially if it will not be a folding version like the feathercraft. You choose the stiffness and strength you want by building the frame to your requirements. I have found this method is far less prone to damage from ruff handling or poor seamanship.

it also can be made from all non-toxic and inexpensive or even recycled materials. No costly, smelly, nasty epoxy and fiberglass.

You can design a very durable wood and plywood truss structure and cover it with heavy fabric for less time, money and weight than any other method. Your plywood hull design can be adapted for the skin-on-frame construction by using either built-up bulkhead or simple plywood ones, with stringers and cross bracing. It will look like a truss before it is covered, very stiff. It will be the lightest, strongest structure you can build for the money. It builds fast, it is low cost, and easy to build or repair with available materials. The only disadvantage is you can not have hollows in the hull shape and the frame limits inteiror hull space (not as much of an issue with a catamaran hull).