Which is what? Lost gas?
Swapping bottles could transmit Cooties.Quote:
If you are all using the same gas and doing the same dive, why does it matter which team members bottle you or anyone else in your team picks up?
Assuming everyone used the same bottles, same rigging and same reg, it would make no difference. But add an odd stage rigging, an odd reg or mouthpiece (sea cure, etc) then it starts to become more of a problem.
More practically, if we are moving in line as a team, and we drop as a team, we are all removing tanks at the same time and placing them so we can all pick them back up at the same time - it ends up being a real time saver going in and coming back out.
Finally, to get nit-picky, I have analyzed my gas, and while I assunme you analyzed yours and may have even watched you do it, I'm never 100% sure what is in your tank. Consider it an "O2 Cootie" issue.

