I can seen clearly now that I need to invest in a sausage for diving in areas like Cozumel where the DM's "sometimes" may take groups towards unexpected (not covered in the briefing) swim throughs that spit you out somewhere else. At least that way if it happens to me, I can hold back and know that I've got my sausage to tell the boat operator where I'm at once I re-surface (I'm visualizing a drift dive, for example).
Now, keep in mind that I'm new still, so I'm routinely bouncing questions off of a co-worker of mine that is looking forward to diving with me as a regular dive buddy (we're good friends too). I asked him the other day what his normal dive depths are on these trips he takes to Cozumel, the Great Barrier Reef, etc. He replied, "Really, you just follow the group." Oh...........my. This isn't the first time he's surprised me with an off-the-wall comment like that, and more often that not his ansers contradict a lot of the training I received from PADI. He has been diving for 20+ years but only does so maybe 3 or 5 times per year. We are either going to have to re-visit some basic diving guidelines for diving as buddies, or he's going to quickly tire of me being so safety minded, lol!