and the individual agencies have FAR deeper pockets than their minions. I am sure that the lack of rescues will come up sooner or later in a law suit... too bad too.
IF I organize the dive... you are gonna sign something somewhere, UNLESS you are a dive professional, and then I try to get you on the waiver.
IF you sign, then my insurance covers you... if you don't then they might not. Then I might be fully liable.
The most common dive accident (according to NAUI) is an ear barotrauma. I always ask students if they can clear on land. Go figure....
NOW, if I don't organize the dive, but am truly along for the ride, I let the organiser (boat, or whatever) ask for the signature. I sign on as a NitrOx diver and that's about it. I don't offer solutions, I don't fix gear, and I don't offer to "help out" in any way. I don't even offer to buddy with anyone, and try to slip off of the boat without a buddy... if possible. Then I can do my own thing underwater and there is no problem. BTW, if I see a potential injury in the making, I point it out to THEIR dive master. Only if it doesn't get corrected will I step in (I just can't stand for ANYONE to get injured) and point out the problem publicly.
BTW, as a dive professional I may incur a lot more liability, but I also get a lot of lattitude as well. I also get to claim my gear/maintenance and additional training off of my taxes. I get to claim the whole cost of the dive too when I am a leader.
Someone has asked for a copy of liability waiver, and I will post it here as an attachment when I get back from church tonight.