Ayisha
Contributor
That's the thing with the synchronised diving club; fine for them, but not good for the skipper who needs to know that they can drift with the pack as soon as the last diver's bag comes up.
There's nothing dangerous about 3 bags/lines for 3 divers; they rarely tangle, and if they do it'll unwind when they ascend. Something to do on deco.
Captains here in the Great Lakes and rivers ask us to put up 1 SMB per buddy pair/team. I have never heard any of them ask to put up 1 per diver, although each diver should have one. Same for other locations I've been diving at.
I don't think I would want to be near a whole boatload of divers deploying DSMB's in our St Lawrence river, where the SMB goes sideways as much as up. Deploying an SMB in current can be dangerous if not done correctly (no slack) by one person, let alone many.