rongoodman:Looking forward to seeing the cenotes again, but the stress, not so much. At least I'm bringing a working back kick and helicopter turn to the table. I have this mental image of the instructor with a riding crop smacking me every time I drop my knees!
Ron, don't stress! I think you will find that, with the training and experience you already have, cavern will not be a big deal at all. Most cavern instructors expect to spend significant time teaching buoyancy, trim, and non-silting propulsion. I know ours was a little nonplussed at the skills we came in with, and I'm not sure he knew exactly what to do with us!