Thanks for the links, that's some nice stuff.
Lightweight is relative... It's still a 15' boat, and is my big gear hauler. Currently I can fill up a nearly 4'x2' dry box, line up 5 rocket boxes, fill the cooler, have room in the cockpit for a pair of captains boxes, nestle the fire pan under the dunnage pile, and pop the bimini up over all of it. Setting up to carry a few gamma buckets and a whole bunch of dry bags, and I can still support others paddling mini-me's or kayaks but draft 3 fewer inches, maybe without ALL of the creature comforts but still have an easy trip.
And even when I'm fully rigged, it's still lighter than the barges I pushed commercially!