All of what John posted is in agreement with the secondhand information that I have. I think the biggest takeaway for me is the reinforcement of my previously held beliefs that.... You should always have your own dsmb when diving, especially in Coz. You should never relinquish responsibility for your diving to someone else, not your buddy, not your DM and not your instructor. Scuba diving is a dangerous activity that can be made relatively safe or deadly simply by the seriousness or the nonchalance of the participants. The beginning and the end of the dive are especially critical in determining a safe outcome and the focus of buddies during those periods should not be distracted or taken lightly. The last five minutes of a dive may be the most important five minutes of your life or your buddy's life.