FWIW, 200Lbs is way too close to 0, since not all regulators will let you get the last ounce of air from a tank.
I beleive that a lot of DMs get desensitized to conditions they dive in every day and don't realize that for someone who has never been to that depth or location it's quite stressful and even dangerous.
110 ft is WAY too deep without having any deep diving training. At the very least, it requires understanding that you'll probably get narced, and also will need to either plan your dive according to the tables (and dive it as planned) or have a reasonably conservative computer and follow the it very closely.
There are also a number of other changes when doing Deep Diving, from what you learned in OWD class, for example, an Emergency Ascent (bouyant or swimming) is a Really Bad Thing from 110', unless the alternative is certain death.
It was very irresponsible (although very common) for someone to just take you out and tell you to "go down"
Terry
PS. You both should have canceled the 2nd dive when he was nauseaus. Vomiting underwater is bad, since you don't want a regulator full of inhalable lunch. It could also have been a symptom of something more serious (which luckily, it doesn't seem to be).
The first thing you should always be concerned about is the personal safey of yourself and your buddy. Last on the list is money, since you can always go back and argue with whoever sold you the trip.
Terry
YPink:
He started off with 3100. He gave her the half tanks signal at 1500. They went back. He came back up with 200 after his deco stop. The dive was 16 mins. Honestly, I just asked him that and I am shocked that it got so low. I am never comfortable having below 500.
