Seth T. wrote:We did this dive last month without incident.
Guess they don't teach the little things ... like contingency planning and gas management ... in Master Diver class. Guess they don't teach you to think about the fact that you're carrying your buddy's emergency air supply either.
You can get away with dives like that as long as you don't have an incident ... but you're trusting on luck to get you back safely. A couple of people have died around here the past few years learning that lesson the hard way.
Me and three buddies did a simple dive to the I-beams yesterday. At about 80 feet, one of my dive buddies experienced a second-stage freeflow. In the time it took to try to stop the free-flow, get her onto someone else's gas, and shut down her tank, she lost almost 50 cubic feet of gas. Now her tank's useless ... she's gotta come up on someone else's tank. We did a direct ascent from 80 feet to the surface. Took about 5 minutes.
Extrapolate ... from 132 feet that same freeflow would drain your AL80 down to nothing before you could shut it down. Now you're looking at about a 7 minute ascent, minimum, if you want to do it safely ... and that's after you've just spent a minute or two futzing around trying to figure out the problem. And I don't care how good you are ... messing around with something like that at those depths is going to put you in a "heavy breathing" state. Think you and your bud could manage that ascent OK with both of you breathing off a half-spent AL80?
I don't ... you'd have to risk making a fast ascent ... and probably skip your safety stop to make it to the surface before your tank ran out.
If you want to dive that way ... it's your choice. Just be aware that you're taking unnecessary risks that people just shouldn't be encouraged to take.
Good luck ...
... Bob (Grateful Diver)
. Again, this is completely contingent on the currents! If they are strong on our way down, I'm stopping us right there and heading back to the shallows. 
