2402 or T/F 8000 is suitable for hypalon tubes NOT PVC.
There are far more experts on here than me, but hot is OK but you'll have to be quick and quite possiably mix-up a weaker glue to activator mix. This time of the year OK, don't leave it until August... you'll only have 5 minutes cure time!!
I had a good guy overhaul a RIB in Malta do you want me to dig out detials or are you wanting to do it yourself?