Quote: (Originally Posted by
Ben Field)

I meant with a seperate reg or autoair type device.... anyway nose breathing on a FFM is cheating

and you won't be inclined to do it with a mouthful of CO2 loop or caustic cocktail I'd wager...
I've done it with a mouthful of cocktail, not pleasant but certainly doable. Ideally I'd have another p-ported 2nd stage so I could remove the CC mouthpiece and swap it over. I find breathing through the nose doesn't give me enough volume and when it starts snotting up..... This system is best for sanity breaths but I wouldn't want to do a long hang on it, luckily I was out in 8 mins or so.
Ian