NWGratefulDiver:
Well, you're welcome to your opinion ... but in terms of the "ethical behavior" argument, you are wrong.
With all due respect, I am not sure one can be "wrong" in a discussion of "ethics" or what one views as ethical or non-ethical behaviour. We may see the siuation differently, or it may mean we have different ethical standards, but it cannot be a case of "right": or "wrong". This may well contrast with a "legal" analysis of the situation, where one an easily hold a position that is (legally) wrong.
To me, the situation is relatively clear. A single diver attempting to tag along. There really are only two possibilities. An experienced solo diver, being a pain, or a novice, lost or confused diver. To discriminate these divers would be relatively simple. Does the diver have a fully redundant equipment set up? If not, its not a qualified or equipped solo diver.
So, we have a novice, lost or confused diver. In that situation, is it right to send that diver off alone? We all know that a solo diver (without appropriate training and experience) is at significant risk of accident or injury. So, leave aside questions of legal responsibility, duty of care etc - is it simply *human* to send that diver off alone?
It really does sadden me that some many people say "Hey, let that person take care of themselves. They are a diver, they take responsibility for their own dive". Indeed they do - but does that *completely* absolve one? Especially a "professional diver" who *knows* the increased risks of solo diving, of the possibility of a problem rapidly becoming a major disaster for a single, poorly skilled diver? Yes, the diver was screwed by the boat, screwed by the advice given, screwed by what they were told. But we were all novices once, and we *believed* what we were told, even when we thought that advice was against what we were told during our training. It takes a long time for new divers to have the confidence to stand up to dive professionals (the boat crew in this case) and to say screw that, thats *****ed.
I got into divemastering and later instructing to *help* people, not to swim away from them. If you see my ethical position as "wrong", well, so be it. But I know I would sleep better at night having helped than having swam away. A single "good" dive is just not worth the risk to another person life.
-j-