OOA question. Who is teaching to give your main unit?

[RJP]

In the interests of keeping this relatively clean, I will say something about the use of a knife under water. IMO, it is a last last resort for solving ANY problem.

You may have swerved into a "meet you half-way" solution for the OP:

You could pull your knife, cut your octo off your rig, and donate THAT to the OOA diver!

 

[DA Aquamaster]

In the interests of keeping this relatively clean, I will say something about the use of a knife under water. IMO, it is a last last resort for solving ANY problem. I have a background in climbing. We are reluctant to wave sharp objects around for the simple reason that if you accidentally cut your rope, you are in a world of hurt. A knife is the last, last, last resort, always.

I feel the same way about using a knife under water. If you nick or cut a hose, again you are in a world of hurt. I dive with a pair of shears and a knife with a blunted tip, but I hope the knife never comes out of its sheath, as it is far safer to cut a line or something with shears than a knife.

I switched to a small blunt pointed knife years ago. Dry suits, and scuba equipment in general last longer with out a long pointy knife.

You may have swerved into a "meet you half-way" solution for the OP:

You could pull your knife, cut your octo off your rig, and donate THAT to the OOA diver!

Along that line, I don't carry a great big pointy knife, but I suppose if I see some one coming to steal my long hose primary I could just turn that post off and watch them have their second OOA three breaths later. That could be interesting in the same demented and misguided sort of way.