Almost anything is better than hot glue. Contact adhesive, or epoxy (preferably a flexible one) would work.
I was thinking of buying something recommended by EasyComposites, because they seem to have lots of specialist knowledge. How about this Permabond flexible epoxy? Is it better than the stuff in DIY shops? https://www.easycomposites.co.uk/semi-flexible-15min-epoxy-adhesive Perhaps I could build up a sandwich of glue alternating with bits of tyre?
I was thinking of buying something recommended by EasyComposites, because they seem to have lots of specialist knowledge. How about this Permabond flexible epoxy? Is it better than the stuff in DIY shops? https://www.easycomposites.co.uk/semi-flexible-15min-epoxy-adhesive Perhaps I could build up a sandwich of glue alternating with bits of tyre?