RE: portage system. Suppose you put two tubes aft, two front. then you could insert rods into aft tubes and two axle supports + wheel into the bow, and use the Kaynoe as a wheelbarrow. Only one wheel to pack & keep track of. Use the rods as night-time tent poles.
RE: Plexiglas window in bottom. Difficult to see it through the kaynoe deck, I would imagine. And putting it into the "canoe" part would put it behind the paddler, wouldn't it? This might lead to some rather tippy behaviour on the part of both Kaynoe and its driver.
Down in Texas, longing for the PacNW and water with real fish and trees round it.