Hi all,
I can answer some of the questions about our diving, but I don't do the tech diving so I'll have to get someone else to answer the technical questions.
Our Over the Wall dive has been one of our signature dives for 50 years. We descend over the Tongue of the Ocean and sit on a ledge at 185 feet. From the time we leave 20 ft until the time we have to LEAVE 185 and start ascending we have 5 minutes. The rest of the dive is spent at 55 or so. The total dive time is 18 minutes and when time correctly, is a no deco dive. It's led by a team of divemasters and we control time and depth. Like I said in the Spiegel thread, I've been doing this dive for two years and have never had an OOG situation.
As far as Church Windows (225ft) and some of the inland blue holes, they do dive on AL80s but they carry extra gas and have stage bottles.
The deeper dives and cave dives are done on a case by case basis after spending time with divers to evaluate their skills.
Whoever recommended Brian Kakuk for caving was right on. He's a friend of Small Hope's and dives our caves here. We've got an awesome cave survey that he did of one of our Blue Holes on the wall in the Lodge.
If you're a diver that like to stay within recreational limits, we've got plenty of great dives for that too! Over 60 dive sites within 15 minutes and only a few are below recreational limits.