I have not dove this myself yet. This will be my first time. Yes, I am referring to the State Park. It is only open to divers from Nov-Feb when the trout season is closed. I am told this spring is about 85ft deep when you come to a restrictin that cannot be penetrated due to high flow. I don't think there is all that much to see but there is supposed to be alot of trout swimming about. As far as surface support, that term was probably the wrong one to use. They just require that each anytime there is a diver down, there must be at least one person on shore. They don't have to be dive certified or anything like that. In fact, it looks as though we might be bribing one of our wives to come along. For more information and to make reservations (forgot to mention that reservations are needed), call the Bennet Springs State Park Nature center.