Fold-In Wheels Carry Boat Or Canoe
This idea from April 1963 might be useful for those who like to do a portage – fold in wheels that can help you carry your boat or canoe.
The lightweight wheels can be carried in a small boat or canoe, making lake to cabin hauling or lake to lake portaging much easier. This idea which was patented; the wheels would be hinged to a frame and clamped to the gunwales.
Thumbscrews would lock them in riding position and then could be released to enable them to swing inboard, one on top of the other.
One downside is that there could be slightly less room for storage of all the rest of your essentials.
Also this idea may not be quite as relevant now given that modern day canoes can be made with very light materials.