Quote: (Originally Posted by
Paul T)

Glad everyone is ok, and things worked out
Didn't your adv keep firing when you were on the surface, due to your position in the water, i presume you were feet down head up while helping your friend
What dill were you using - just wondering
Paul
ADV wouldn't have kicked in until loop volume decreased. Being at the same depth the whole time (the surface), the volume wasn't changing.
Also - While in an upright position on the surface, the KISS classic is easiest to breath shallow. This is why I was able to kick the ADV in at will because I drew a very deep breath.