(Frowny Nod)
As a newish DM, I'll take away the following points:
* Discuss the plan for low air diver with the team, before the dive.
* Evaluate individual divers on the team before we get in the water- find clarity where divers are inexperienced and fill in the gaps as possible.
* Identify the divers who are likely to deviate from training and the plan.
* Excuse unprepared divers from the dive.
I haven't had to excuse an unprepared diver yet, so maybe training is generally good?
As a new open water diver I have learned the following points:
-discuss and develop a clear game plan with the DM if you are low on air. If he deviates from it dump him and look after yourself. Its your life.
-try to get a sense of the guys character--does he seem to care about the divers in his group--is he true to his word--if you get an uncomfortable feeling about him--dump him and find someone else. Its your life
-set your limits and if he doesn't respect them dump him and look after yourself. Its your life.