Butch Fries
Contributor
Kind of late to this party, but there's a nearby site called the Cathedral; still deep but much more light and having done both I much prefer it to Devil's Throat.
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Dave, that's a nice description of your dive, but do you have any control over who else might be on the site while you're there?
Do the Cozumel air fill establishments pump 28%? I thought it was the standard 32 or 36.
Isn't the Cathedral south (upcurrent under most conditions) from the Throat? When I dove the Cathedral last May (a much better dive than the Throat, IM0), the DM pointed out the entrance to the Throat to me as we were ascending at the end of the dive.
We will definitely try out the Cathedral and see what our dive guide thinks in terms of the Devil's Throat. The responses on this thread have been an education.
Just over a week until we arrive in Cozumel. I am starting to burst with excitement.
My GUESS is that almost all of the folks doing Devil's Throat are doing it on air so the ppO2 at around 130' would be 5 x 0.21 or 1.05 so not that close to the ppO2 value of 1.4.
Personally, I'm more worried about getting bent doing those depths on 'air' than I am about using EAN 32 and oxygen toxicity at those depths.