Neither my son nor I enjoyed the drift diving as much as the laid back diving we experienced at Mahahual or Roatan. I know lots of people rave about Cozumel, but my son and I just didn't care for it. Our opinion will probably be in the minority, but it's just how we felt about it. By the way, we dove with Edgar from Aldora. We dove Santa Rosa and Dalila. We don't have any complaints at all about the dive op or instructor, just didn't care for the current associated with drift diving.
As far as hiring a DM for the first few dives, I must be misunderstanding something. No one is advocating going alone after their first couple of dives are they? Because that's how I read it the first time. I could agree if you are saying that after a couple of dives then they could go with a group that is led by an instuctor/DM.
Someone will correct me if I am wrong, but Santa Rosa has some of the faster current generally of the usual sites. That being said, I guess it is a think you get used to. After Cert dives in Antigua, ALL of out diving is Coz. Quite frankly I keep thinking I would hate to dive where I had to SWIM! Coz to me is like "please hold on to the bar" mostly its like the kiddy ride, sometime it can get up to the slow coaster. A few were really ripping. For those my only sacrifice was no getting any decent pictures, but it was a fun ride. Couple of young guy would love it.... The neatest I had, the current changed direction like 4-5 time on the dive and we kept going back over a free swimming green moray. I got several chances to take a great picture. I still didn't but I had the chances....