Stepfam, Shoe goo is a product which we used to repair worn down running shoes "back in the days". Its a kind of rubber adhesive in a tube which can bond soles back on, but for runners on a budget, especially pronators, you could use it (artfully) to build up the worn sections of your sole (soul?). I'm not a craftsman so I never quite got it right. You could often tell who was using Shoe Goo because they sometimes ran with a wobble due to having a lumpy sole.

I have no idea what Plimpsoles are, but I found one old Etonic StreetFighter out in the garage a while ago. My only occasional trail rides make me wish for a tire adhesive that would keep my upright. You might try velcro treads!