I wrote
I would be concerned about doing this with someone who wasn't trained to share gas on a long hose. with a new diver I would have started us up/back as soon as air sharing started....
I was asked
what is your concern about the long hose?
Answer
First of all, by "sharing air on the long hose" I mean using the long hose to share air while continuing to dive, i.e. not heading up/out ASAP. I'd probebly never do this on a short hose because it's just not comfortable enough to be anything anyone is likely to want to do.
I just don't like to do anything that might make the other diver feel uncomfortable: stressed people can get real unhappy real quick and with virtually no warning. Someone who isn't trained to share air might get scared enough to do something stupid/inadvisable/unfortunate, maybe getting hurt, maybe getting me hurt. At the very least they might just be a minor annoyance: biting thru the mouthpiece on my backup, gluing onto me, yanking on the hose, etc.
Note: "training" can be just a brief discussion. I definetly don't think we've got a new specialty here :blinking: