DogDiver
Contributor
You can use the special PADI tank/backplate bungies without fear.
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Dont use a single tank wing with doubles. you can bend the backplate doing that.
I agree, use double wing for twins.
However, I have never seen a wing bend a plate, either ss or ali. Not sure how you will get enough pressure in the wing to force the plate to bend??
My doubles are each 5.5 ", and the two bottles weigh about 30 lbs total. All doubles are not the same. There are still some triple manifolds around too.
On deeper dives I position a 12cf bailout upside down with its own reg between the twin 40s. True redundancy in a smaller nicely balanced and streamlined package.