Given the choice, I would rather drop (or lose) a stage bottle filled with bottom gas, than a deco bottle.grazie42:All decodives are planned with contingency for lost decogas...
whether you leave it or bring it depends on how willing you are to utilize it...
Yes, the stage bottle will help you complete the long hang at 20' doing deco on the backgas, but the deco gas will avoid the long(er) hang altogether.
I think that we might be talking in circles and just using different terms.