Thanks so much for the helpful information! It does sound as if there is a "bottom" time thing here. That is good to know. Many of the operations my wife and I dive with don't typically require a DM or tie you to a group, you dive your dive. Especially here in the Pacific NW. We have live boats, great drifts and you pop your SMB and surface when you are done. To date we have only experienced one dive operation, in Roatan, that was all about dipping people, swimming around the boat for 1/2hr, DM boarded and we were "allowed" to continue to lay on the bottom under the boat for an additional 1/2hr. I am wondering if anyone has experience with Pelagic Ventures Scuba? I have been emailing with Mary and she seems awesome and much like our speed. They take 6 or less divers out for a 2 tank dive, drop off the less experienced/divers that are done for the day, get a surface interval on the trip in/out, and then go look for some more diving... said it might just be the two of us.