I haven't lost any confidence at all in Cozumel as a Diving location; I've been going there for 20+ years, and will continue to go there. However, this Dive Incident HAS reinforced my prior operating assumption - Do Not Shop for Dive Ops on Price Alone; if I'm relying on these folks to get me back safely from every trip, I don't need to pinch pennies. There are a number of Dive Ops that I will Not use. No need to name names here, but as a general rule, any Dive Op which contracts with the Cruise Lines to take divers and any Dive Op which advertises itself as the cheapest will not likely get my business. If I'm on my own, I'll choose Aldora, for any number of reasons; all boats carry Oxygen, I can get a steel 120 tank, all divers are on cumputers, so I can pay attention to my own situation (i.e., if I get a couple bars into the yellow, I'll probably ascend a bit, & keep near or at the top of the group, & add minutes to my safety stop before surfacing), long surface interval on the beach, meaning extra safety on second dive. All these factors make me feel safer, and are worth any extra cost. But there are other Dive Ops I feel safe with as well. So find one that meets all your criteria & stick with it. Knowing nothing about Scuba Mau other than what happened here tells me I won't be diving with them, and if I learn that Dive Professionals at another Op also engage in this kind of reckless behavior, I won't dive with that Op either. Off day or not, I do not want to put my life in the hands of a DM that doesn't respect and assiduously follow the safety rules in his own diving.