It's good to ask "what if" questions -- I'm a great fan of it.
But some things simply shouldn't happen, ever. Focusing on handling an out of gas emergency is LOSING focus on preventing one. Don't waste your effort worrying about CESAs, or practicing them. Spend your time ingraining good diving habits with regards to monitoring gas and staying together. The payoff is bigger.
And for those who took exception to my recommendation for a transmitter that would allow moerby to monitor his daughter's gas, I certainly did not mean to imply that that would take the PLACE of ensuring that she did that herself. I just know that, as a parent, belts and suspenders sometimes look like a good idea when it comes to your child's safety.
Moerby, in reality, you don't need a certain rate of exhalation -- what you need is to keep your airway open. If you do this, the expanding gas will escape, because you will let it go. The problem is that, for the novice diver, distinguishing between an open airway and a closed glottis may be difficult. Maintaining a constant exhalation at least absolutely ensures an open airway.
But some things simply shouldn't happen, ever. Focusing on handling an out of gas emergency is LOSING focus on preventing one. Don't waste your effort worrying about CESAs, or practicing them. Spend your time ingraining good diving habits with regards to monitoring gas and staying together. The payoff is bigger.
And for those who took exception to my recommendation for a transmitter that would allow moerby to monitor his daughter's gas, I certainly did not mean to imply that that would take the PLACE of ensuring that she did that herself. I just know that, as a parent, belts and suspenders sometimes look like a good idea when it comes to your child's safety.
Moerby, in reality, you don't need a certain rate of exhalation -- what you need is to keep your airway open. If you do this, the expanding gas will escape, because you will let it go. The problem is that, for the novice diver, distinguishing between an open airway and a closed glottis may be difficult. Maintaining a constant exhalation at least absolutely ensures an open airway.