I am going to hate myself for this but...
Lets sum it up and get over this.
The SIGNAL for distress at the surface that I have been taught and is covered during the briefing on my go to dive boat is frantically waving your arm or arms. Not calming placing finger tips together overhead (two hands) or touching head (one hand). If you surface and wave to the dive boat you will be placed on O2 and triaged for injury/DCS
A SIGN of panic, in the correct context, may be a diver rejecting gear.
Are we good?
Well you shouldn't hate yourself when saying the truth. I can appreciate this post because I feel at least you have been using a different type of distress signal
and it worked for you. This is the example I was trying to make and suggest.
I will say this, although I do understand what RJP is trying to say about the "sign" of someone experiencing some type distress when having MOF. It still should be noted that it is only "a" possible indicator and not the only indicator.
Furthermore and more importantly establishing an official distress "signal" still needs to be established. You just mentioned a signal that I was referring to. This is just the kind of example I was looking for.
Thanks.
Frank G
Z GEAR - Z Gear