Nope, am a floater not a boater, funny how they rarely cross I only know a couple of guys that have jumped back and forth. Mind you I would be boater in a heartbeat for any of the Grumman's, the Widgeon, Goose, Mallard or the dream bird Albatross (drool drool drool).
Most of my Ernst clan was from Minnesota by way of Chicago where the landed after leaving Germany/Poland. My Mom before she left us was into genealogies and told a story of one of my great great great uncles that just walked away from the Minnesota farm one day leaving behind a wife and children and supposedly headed west. Years later when I was out in the Seattle area I noticed a bunch of Ernst's in the area and often wondered if that's where he ended up.
Which also feeds another theory that flying and perhaps water flying specifically, is an obscure defective gene. It seems pilots are related to pilots.
The Sportsman on Montana floats is a sweet floatplane. Overfloated, which I like, and during the build process I was able to tweak things to match my flying style. 180hp carb fixed pitch, spartan and as light as I could make it. A pilot friend built his Sportsman a couple years after mine and went a slightly different route, Clamar composite floats, IO390, MT constant speed, much "plusher" than mine, also a very nice floatplane but different mission profile.