Hard dinghys are great in crocodile country!
in many emergencies I gave used my dink to push boats with engine problems, and when dragging. One can't with a hard dink without damage.
The best guess of usefulness is to go to the local dinghy dock and count the ratios of hard to soft. Most places RIBs win hands down. (Exception being Northern Australia...)
Ha Ha! Croc's? you make me grateful for my rather cold home water's!! LOL very good point about damage done with a tinny.