"Gary Boggs" wrote in message
...

And about the M&H system, I use the cannula but you have to be very careful
that you don't take any breaths through you mouth. I've heard of some guys
holding a mouthful of water to make sure they don't.

A strip of wide elastic over your head and under your chin will gently keep
your mmouth closed while still allowing you to talk or drink. You can make your
own of course, but they are supplied with those nighttime breathing machines for
exactly that purpose.


Vaughn