UST tyres are HEAVY! sod that. well heavier and i`ve had varying success in terms of durability and punctures while running tubless they seem to no better than bog standard tyres so i dont see the point. The bontrager ARC casings were brill though but they dont make the great big earl tyres any more... the non-arc jones was pish and lasted half a ride.
i dont normally have loads of flats but i`m getting lazy in my old age. less like a spring lamb through the rough - more of a asthmatic hippo.
anyhoo seems no one has a foolproof way of defo getting tyres to inflate (though i`ll look into teh foam as thats a good idea but will mean raiding the campervan roof insulation!)
i`ve had to stop a ride cos the hole wouldnt seal. pissed me right off. i do however pinch flat as i like to ride rough stuff as fast as i can, stairs, drops and other fun/stupid trailside obsticales as they appear.
if i just did wheels on the ground xc and braked on the downhills i dont think i`d ever puncture bar the odd nail/hawthorn.
for the person above - thats great, and i`m happy for you, but i want to run a maxxis tyre. or any other brand i buy on a whim.