While only OW certification is necessary - an OW diver should not dive more than 60’ of this caverns 100’ regardless of how crystal clear or tempting it might be.
IF there are some OW divers looking to do Advanced training (PADI) I know of a class that will be taking place the weekend of December 14th & 15th at Devils Den that has some openings. It is the full class jammed into these two dates (appropriately) and is an all inclusive (covers books, gear, air, all dives and hotel for one night).
I will go up and do this dive with you ScubaCrab IF you can push it back to say 9am or so. The H20 might be 72 degrees but the air temp has been a bit nippy for me! I’d like the sun to warm things up a tad before I start climbing into my gear. If you can push back the time, let me know.