I did the Blue Hole on post-OW dive #7. I hit 132' and only held up because my buddy noticed he was narced. The other 10 divers and 2 divemasters were in the neighborhood of 150'. One of the other divers was doing his FIRST post-OW dive. His girlfriend wasn't allowed to go because she had only gotten her Scuba Diver rating, not the full OW. She was allowed to go on the subsequent dives which were 106' and 78'.
I didn't die, I didn't run out of air, but I did get narc'd and I haven't been that deep since. At this point I realize I was mostly lucky and thankfully nothing really went wrong. I had no business being on that dive and didn't even know enough to realize it.
The operators that are not in the US aren't under the same pressure from INSURANCE companies to restrict access to riskier dives. As a US dive operator, I'll have a much easier time defending myself in case of litigation if I show a reasonable effort to ascertain that a diver is competent to perform the dive. Since I can't take everyone on a shakedown dive, the only tools I have are C-cards and logbooks, and logbooks can be faked. It's sad, but that's reality. I'm not willing to risk my boat and my business by throwing my hands in the air and saying, "hey, if they want to hurt themselves, go right ahead!"
I get a little tired of the tug of war between the people that will take responsibility for their actions, and those who defend poor judgement by saying that someone else should be paying more attention. Since on my boat I don't know which one you are, I have to err in favor of myself and make sure I have something tangible that says you SHOULD know better than to do something dangerous. I'd rather just throw you in the water and let you dive, but I can't do that because even if YOU think you're responsible for you own actions, your next of kin might not feel the same way. Am I paranoid? Probably, but I have to be.
<since I'm ranting anyway>
The biggest problem for me is that no C-card from OW on up to whatever actually mean a thing. It means someone sent in a piece of paper on your behalf that said you could do something. I've seen spectacular new divers and horrible instructors. I think that once you actually get to dive as an independent diver, you should really be all the way through a rescue equivalent. By the time any diver has gone through to that level of training, they have a pretty good idea where they stand as far as skills go and have enough experience to have a healthy respect for the underwater environment.
I don't advocate government regulation of diving activities, but I would like for the cards to have some meaning. I've said before (and I got slaughtered for it) that I think that your instructor shouldn't be the one to issue the card. Let an independent examiner determine what a diver can and can't do. It takes the pressure off the instructor to pass students and puts the emphasis back on teaching.
Umm.... yeah. I so was just going to post my Blue Hole experience and leave it at that... oops.
Rachel