Or you could just inflate your drysuit and surface...
If that works. I know from experience that many drysuits can't hold much excess air before it bubbles past the neck seal.
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Or you could just inflate your drysuit and surface...
if you have a properly weighted rig, it only takes a few bursts of air to make you positively buoyant.
+1!
Or exhale into the manual inflator. (For those that still dive BCs with manual inflators...)