Hi, I have been certified since 1991 but I have just started diving with a group of guys that routinely dive deeper than I have ever been before. I must admit there are a lot more fish down there and we dove this past weekend to as deep as 150 feet. You basically just drop down and shoot the biggest fish you see and then come up. I have plenty of air, my computer says that I am still well within the NDL times and I have not felt narced at all. I feel like this is safe but when I mention how deep we go to some other divers they freak out and say we're going to die. My question is this: other than air, NDL times and nitrogen narcosis is there are reason that I can't continue to dive like this. Let's hear some opinions. Thanks!!!