Don't nail me down on it, but I think Pez dives an Inspiration, at least that's what they list on Diablo Adventures' website. Yucatan caves for most part, I gather.
I doubt he has a clear understanding of the way absorbants work ... otherwise I doubt he would gamble like that.
Certainly not anything I would do, and if my instructor would recommend it I would get my money back and look for another one.
