Building a pontoon boat. Need to join numerous foam billets and cover them with something to reduce surface area. What would you do? Great stuff? EA40? Boat epoxy? Fiberglass tape? Pontoons are each 16’x1’x2’. I have numerous billets of differing sizes. Thinking of joining them with dowels and epoxy and filling gaps with great stuff. Bonus question… Am I retarded? If so, why?