When you say "opinion" do you mean the points you describe in your reply are based on first hand experience with freediving on nitrox or are they personal theory?
As for point 1, oxygen toxicity would occur at 235 ft. on air... are the tables valid for a bounce to depth?
As for point 2, I personally have not experienced changes in my ability to hold on air; but that may be due to procedure. I hyperventilate with air and the nitrox is used only for the dive.
As for point 3, I have not experienced the confusion or approached the feeling of blackout, in fact, I have the urge to breathe and return without the shallow dizziness and with the benefit of increased bottom time.
Thanks for the comments, I'll see if I become aware of those side effects next time I dive.
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Ted Ciamillo
www.ciamillo.com
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