I didn't go for my octo because I could feel the air rushing out of the first stage. Didn't figure the octo would work for very long. (not that it needed to, but one equipment failure was enough for that dive.)
No criticism taken.....it's a good question.
That and honestly, it was a good opportunity to show my student air-sharing in a real situation....calmly.
All in all, we were 12 feet deep, and I had a good breath.....a normal ascent would have sufficed. Never miss an opportunity for training, though right?
Like I said, I'm relieved that a.) it was shallow, b.) it was me using the rental, and c.) it worked out like it should have.