MichaelMc
Working toward Cenotes
I dive recreational only, above 50' or 90', and donate my primary. Donating from my mouth is really easy and fast. As is swapping to my necklaced secondary.Most SBers (or at least the most active ones) seem to be tech divers or at least divers using tech configurations.
I've done 'I/you will go OOA sometime during the dive' with buddies. I think that is a great drill! It's gone much better with my long primary than with their shorter octo. That is a bit about the length of the donated hose. But I've also waited very patiently -- and not panicking while dying -- while a buddy worked at finding and disconnecting their octo to donate, in scenarios where we were explicitly practicing OOA, not doing it unexpectedly sometime during the dive.
I've dove primary donate, and long hose, since I got back into diving with single back mount as part of scientific diving. Though now my diving is, recreational, tiny sidemount or occasionally tiny doubles.