Hmm interesting. I thought the UL floor was 190gsm and the tubes were 115gsm, or something close to that. Were you dabbling with the idea of doubling up the UL floor or wall fabric to increase the abrasion and puncture resistance? What about using the 250gsm tube fabric as a floor base instead?
I remember you hosting fabric strength tests though I dont recall if you had one for the UL. In any case I’m pondering over the ULs puncture resistance and weighted support if ever a second person needed to climb aboard or even for abrasion resistance.
A UL raft with sidewall protection that can handle class 1 & maybe a bit of class 2 (at your own risk), all under 3lb, sounds like a gold star no brainer for through hiking or just generally packed.