Ron - I remember that. The Guy's name was Mike Murray. He later emailed me, and His Boat was 12' 6", and mine 14'. His had a little bit of a swept out cut-away near the oar-locks on the combing to allow you to row without rubbing. In the end we determined for sure mine was not Muller Boat Works from Stillwater, but Shell Lake. I am now sure the ones pictured are Shell Lake Boats. Mine had been canvas too, but the first owner glassed it before selling it to the Guy I bought it from. I sold it not too long after the MN Game Fair. My research, and interest abruptly ended late Summer 2011, and I bugged out of MN well before Wintertime...
It was very interesting to hear Him tell how the Boats were made with steamed lumber, metal jig, and cinch-nails. Then canvas, and white lead paint to seal em up...