ruffles' discussion about making specialized pontoon floats for a motorized canoe reminded me of a story my boss, JD, told me. A friend of his owned a lodge on the far side of a shallow lake. In order to haul building materials, stoves, generators, fuel, etc, he needed a very stable, shallow draft boat that could haul large unwieldy loads. His solution was to rig 2 19' Grumman freighters as a catamaran with a plywood deck between them. I imagine that the system was more detailed than that. But it apparently work quite well.
Has anyone here done this or seen this done? And wouldn't that make for a very stable craft? I'm guessing that a frame similar to a cataraft frame could be fabricated for the task using appropriate tubing and NRS connectors.