> I actually try not to monitor *too* closely.  It makes the hangs seem to
> take even longer (that whole watched pot never boils thing).  I
> generally make sure I keep it between 22FSW and 18FSW, which I find is
> pretty easy even if I'm not monitoring that closely.

I have a question here. Like Paul I currently do deco on 50% and will
hopefully be getting certified for 100% soon (anyone in the Monterey area
want to make up the numbers for a technical nitrox class with Wings in a
couple of weeks?). I know a number of people on this list advocate not using
dive computers, but the reality is that many of us do, and a dive computer
will give a violation if you go above your ceiling. So on the 20' stop, if
using a computer you need to stay a little below 20', hence presumably
reducing the margin for downward error if on 100% O2. Correct?

Ian

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