Do you guys, and ladies really believe this stuff you're spuing forth? I didn't think that there were that many ways to incorrectly dive with 2 computers. Advanced diving is about risk management, and from these posts, I don't see any risk management, rather I see a bunch of potential problems. I tried to keep my mouth shut, but just can't with the amount of misinformation being thrown about. If people want to mess around with this "tech" stuff, then learn from the proper people. Either people that have already been trained, or from qualified instructors. I learned early in my diving that what seemed reasonable and clever at first was actually frought with problems, and I learned from that.