Why do you automatically assume it is the instructor's (or the agency) responsibility totally?
because she is a paying customer, and her certification is with a particular agency.
As an instructor, I can tell you, I do my best to ensure that people who shouldn't be diving for medical (or mental/emotion/lack of maturity/other) reasons don't even start my training classes - - but people can and do LIE on the applications. And people do have to take on some personal responsibility!
I appreciate that people do lie when filling in medical forms, but if it is blindingly obvious to every guest on board that a certain individual shouldnt be diving then surely the responsibility lays with the guide. It would not work if it was left up to other guests to stop an individual from diving. At the end of the day, ( it gets dark ) ( sorry bad joke i know ) the feelings that the guests on board had were for her well being.
There are no requirements (at least in the US) to recertify - - ever - - so once you are certified, you are always certified. So, the woman may have been in good physical/mental health when she was initially certified. In that case, there is some respnsibility on the part of the dive boat or resort for the protection of the other divers and their divemasters to screen their guests. But, I've seen threads here and other places complaining about these screening practices - - so the resorts can't win either way.
Do rescue divers not have to keep their first aid skills up to date. I am a fully qualified first aider and i have to go on 5 day courses every 3 years to keep mine up to date. If i dont, i cannot work as a site manager, surely if first aid is part of the rescue diver course then this part should be kept up to date. I know i was referring to revoking her licence to dive rather than her rescue certification, but i find it strange that the first aid side of things would not have to be kept up to speed.
i know it is hard especially for liveaboard operators to have such controls, but imagine the scenario.
youve just paid $10,000 which is about £5 million in todays economic climate for a trip to somewhere offshore like cocos. you have a diver there with terrible diving skills and ill health who is happy to self certify herself fit to dive (and as was our opinion on our trip) your opinion on your trip, along with the remaining divers is " jesus christ, she/he shouldnt be diving " the inevatable (sp) happens and then the diver gets a hit or her health worsens. there is no medical centre near by and the boat has to head back 30 hours to land on day 3. $10,000 for a couple of dives at cocos is quite a lot to pay in my opinion.
As i said in my original posting, this was a subject that was raised between a small group whilst enjoying a few drinks one night and we could not come up with the best solution, so that is why i posted the topic.
stew