For one of my college courses I am designing a collapsible portage cart that will fit in the stern on even small playboats to make portaging more convenient and easier on the body. I am curious what you all think of the idea and what features/characteristics you would want to see in a product like this? Furthermore what are some of the other products out there that you guys/gals have used? From my experience all Ive seen or heard of are home-made backpack systems. Any input would be greatly appreciated, and Ill keep everyone posted as the product develops.