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To attempt to put it succinctly, there's an inherent tradeoff between standardization and flexibility, and DIR struggles to maintain a realistic balance over the entire tech-to-rec spectrum. Few divers these days deny that sidemount has some use cases. Currently, the thinking in the DIR community, as evidenced by GUE's standards, is that the uses are limited to tight caves. But could there be some other limited use case that is recognized by the DIR community someday?--doubtful, but who knows. A futurist might predict we'll all be diving rebreathers, and the whole sidemount versus backmount tension will be moot. DIR principles do recognize bringing the right gear to suit the dive at hand. If the dive requires a surface swim, I take a folding snorkel--they're a great invention--with me in my pocket for deployment while I'm doing the swim.If for example you dive in overhead constraints [ice, wrecks, caves, structures, pipes, etc.] or with a "do or get dead or crippled" decompression obligation the redundancy and added regs, bottles, lights, computers, masks, knives, lines, 7 foot reg hoses, double bladder wings, dry suits, etc. may make sense....if needed...dive through the Northern CA 5 foot surf and heavy surge with side mounts or place you mask backwards on your forehead and not have a snorkel when you must surface swim through the white caps and you will have trouble. Compound the choices with what gas mixture you may or may not need and you end up during a dive juggling a lot of often at crossed purpose variables.
Absolutely.It should be your personal choice how you attain the magic of diving.
Barring some discovery of a huge new helium source somewhere, I think it's pretty clear that deep open circuit diving is becoming untenable. It doesn't take a crystal ball to predict that we'll all be diving rebreathers eventually for everything (other than training) much deeper than 100ft / 30m.A futurist might predict we'll all be diving rebreathers, and the whole sidemount versus backmount tension will be moot.
You may see this as the truth, but my experience diving with teams tells me otherwise. A true team is greater than the sum of its components.One, all dives are solo dives.
The other agencies still teach basic air to 130’ (140’ in an emergency) and other tech agencies teach air to 150’ with deco (TDI AN/DP)Barring some discovery of a huge new helium source somewhere, I think it's pretty clear that deep open circuit diving is becoming untenable. It doesn't take a crystal ball to predict that we'll all be diving rebreathers eventually for everything (other than training) much deeper than 100ft / 30m.
I agree that equipment standardization may sometimes be over-emphasized. An extra D-ring is probably not going to do any harm to the individual or the team. But keep in mind that standardization is not just equipment, it's also procedures and gases. It can feel kind of liberating to know in advance how certain things are going to go, without explicitly covering them in the dive briefing. Everyone is going to handle certain situations the same way. You know everyone is breathing the same gas and that they analyzed it, and the likelihood of something unexpected happening because of O2 percentage is extremely low. I find that that feeling of predictability makes my dives more relaxed and enjoyable.Concur about standardizing equipment orientation and what is carried, but would add this is primarily for the individual diver and not the "team".