My left boot sole delaminated and was flapping like a big piece of bologna on a cross country hike, luckily on the next to last day. We tried gluing it that evening with about 3 thermarest repair kit glue tubes (everyone's in our group who had one), which held it together for a little while the next day but it failed after a couple of hours, at which point the bear-hang rope we'd wrapped around the forefoot many times kept it walkable. I kept worrying I'd have to walk out in my socks but it never came to that.