Yeah, I'd think you'd want to apply that principle, but with different materials for an aircraft. Off the top of my head I am thinking dyneema threads inside (i

Yeah, I'd think you'd want to apply that principle, but with different materials for an aircraft. Off the top of my head I am thinking dyneema threads inside (instead of dacron/polyester) and a carbon fiber/mylar composite for the outside cloth, like is used for high end racing sails on sailboats. I don't have experience with hard SUPs but have a cheap RetroSpec weekender 10'6" SUP at 17.5lbs - I quickly looked up the weight of similar size composite boards (e.g. Isle 2) and was seeing more like 24lbs. I googled "competition SUP" and found some at 17lbs in the same length as my inflatable, but much narrower and 100lbs lower in max weight capacity than the inflatable SUP of the same weight. For kayaks, high end drop stitch kayaks are about half the weight of rotomolded plastic ones of the same size, and only slightly heavier than skin on frame kayaks made from exotic materials, which are the lightest kayak technology and slightly lighter overall.