SC 2000 conveyer belt glue is the best stuff I've ever used.
It's a 2 part glue which is vastly superior to the West Marine
The label says basically "rough up the surfaces, apply mixed glue to conveyor belt mating surfaces, clamp, then wait (I forget how long, but not very long) return conveyer belt to service
We repaired our Avon
3.10 a couple of times while in the tropics.
That was more than ten years ago and it's still working just fine.