Many years ago I built a small (12 or 13 foot)kayak with sawn plywood frames connected together with spruce stringers. The frame was skinned with canvas tacked on at the gunwales and treated with airplane dope and painted. This construction proved quite lightweight and durable. It has served several generations and is still in use today. It was also easy to build - no steambending etc. I am interested to know if anyone has plans for a larger sea kayak of this type or experience with this method.