College kids sometimes balk at certain tasks. I find high schoolers much easier to manage! Older people can be difficult also. After watching the shark slam into the back of my head my dive buddy refused to go on any dive where the word shark was mentioned. We had one of those rare opportunities to dive Santa Monica rock on a calm day and he saw a shark as we were picking up the mooring. Nothing was getting him off the boat! Teenagers would not have been a issue!
G