I was wondering when we were going to get an update on that dune you mentioned several weeks ago!
Instead of fabricating a pack-mule harness, another approach would be to spread the load across the cart better. I have used a Wheeleez beach cart in similar situations (see
www.wheeleez.com/kayak-cart-beach ). Unlike the scupper carts, this can be strapped to the hull at the center of gravity. So you just pull, instead of lift and pull. I got the optional rail kit with mine and it is a big improvement over the standard scupper beach cart when going any distance over sand or dunes. Worst case situation: use 2 carts - scupper plus strap-on.
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