Great article and lots of very valid points made about how to practice. How valuable would it be to have a person around to help with land based support activities such as bringing bottles to be filled or other administrative duties? I would think that with all the stress and diving that is going on, someone to help with these things might make a T1/T2 classes a bit smoother.
Before the class we could ask for volunteers that would help on the days that are needed. Just a thought.