When glueing plastics - and I believe the Trent has such a deck - you have at least 2 ways of approaching the issue - after ascertaining the chemistry of the plastic = important (ABS, PS, PVC, Epoxy, etc.):

o go to UHU or any other of the key adhesives companies. They offer (mostly) excellent Q&A tools to answer your question.

o navigate to some leading plastics companies. They do it other way round and tell you which adhesive to use for which plastic.

. . . and if you get the same answer, perfect!

For cracks I usually use car filler (they offer a certain elasticity)
Ian