I think Dir has a lot to offer, such as the bungee around the neck, dive safey, check equipment, buddy system etc. I do pick up many good tips on safe diving from DIR and I do think the group provides good contribution to dive safety. But I'll never want to be dir. Here's why.....
I was at Key Largo Florida diving DUane Wreck. I signed on with a dive shop that only had 3 customers and they decided to put us on another dive boat with another dive operation. That was my first encounter with a group of people who called themselves "deer" or "Dirt" or something like that. They were not happy that we joined their boat. I was traveling solo and they look like they were experience divers. I asked if I can dive with them, and the respond from one of them was that way I set up my equipment, either I will kill myself or kill others too. The current was very strong that day. I was "flying horizontal" pulling myself down with the anchor line. Barely reached the wreck when I saw one of the guys with that long hose in funny situation...... his buddy shot to the surface dragging the long hose...he looked like he may had an O-ring burst as a lot of air excaped from the neck of his tank. The other diver tried to regain control but was drag to the surface by the long hose..... although it was a dangerous situation, It also look very funny...... dragging to the surface by another diver on a long hose, totally out of control.... I knew then I don't want to put myself in that dangerous and funny situation. A spare air would have eliminated the danger. When we surfaced with the rest of the "dangerous divers", the elite "deer/dirt" had been evacuated due to unforeseen situation, we were picked up by another dive operator's boat. Well, my equipment set up may be dangerous to the elite pro, but I knew I would never caught dead in that long hose situation. I think is rude to insult other divers just because they have a different equipment set up.
Another concern is I don't think degrading other training organization is the proper way to teach. I was reading Scuba Board about this guy report on his DIR class. He had a newthicker wet suit for his class and he was having problem getting proper buoyancy trim due to inexperience with the new thicker suit. This was a classic example of unfamiliarity with new equipment. According to his report, this supposedly highly admired DIR instructor comfort him by saying that it's not his fault, it is PADI's fault for not teaching him about buoyancy!
Well, I'm not sure the report's correct. But I remember my class from OW to IDC. Buoyancy is a very important skill to master in PADI class. I dive in cold and warm fresh/sea water, and changing different thickness wet suits and drysuit, with no problem because I learn about buoyancy in PADI class. Out of the blue a DIR student can't handle a new suit buoyancy problem and the DIR instructor blamed PADI. I just lost respect for an instructor who need to degrade other organization for his personal gain. I decided then, I don't want to be a part of that.
This is my personal real life experience and decision. Not a troll. :icorolley