For our group at Socorro, the issue was being new to significant surge. Feeling like you're going up and down with a 50 foot swing, but really pretty much in the same place in the water column did freak some of our group out. Also, never try to swim around Roca Partida right near the rock. My wife learned the hard way that the current is ripping around that corner. Luckily, mask was knocked off her face down to her neck and reg stayed in her mouth. Never tried that again. Ditto on the SMB. We came up a few times way away from everyone but comfortable with both SMB's sticking straight up until pick-up.
We did have 2 new AOL divers with less than 50 dives. One was almost a statistic but for the great work of the DM at 80 feet in strong current. Our LDS spent some time after this trip refining our experience requirements for certain trips. Even with that we had an incident or two at CoCos Island a few months ago. Moral of our experience: As bad as some want to go somewhere, help them be patient until they can really, truly enjoy it.
Rob