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ROBBINS, ROB wrote:

<SNIP>
 
> We do not use FFMs for the most part because we are diving under a
> ceiling and must be able to find the 4' diameter hole.  If you DO
> have a problem -and this used to be pretty common- and have to go
> to the back-up reg, I don't want to lose my vision too.  For most
> of the season here the vis is several hundred feet and we do not
> use a tether.
> 

Try wearing a backup mask around your neck. Most FFM divers I know wear
their's backwards so that the strap is at the front of their necks. 
You'll find that, with a little practice, you'll be able to make a
regulator switch and slide the mask up relatively easily.

BTW, I'm curious about what kind of research you guys are doing down
there in the waters of the Antarctic.

Stefan Backhus
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