I must admit, I like most of what DIR says and I've been moving in that direction with my diving but there's a few things that I think will prevent me ever becoming a full DIR diver:
- Lamp in the same hand as the compass: Sorry, it's just too much of a pain - especially in dark and bad visibility you need to look at the compass every 20 seconds - constantly swapping the light around is too annoying.
- All stages on the left: It just seems like asking for trouble, sure if you follow procedures perfectly you should never breathe the wrong gas, but why not have the extra simplicity and safety of left-lean, right-rich?
- Single bladder wings: Again, there is extra safety in a double bladder. Even if I can happily swim my rig up I still don't want to keep finning to have to stay on the surface. I also don't want to be dumping $2,500 worth of stages and lights to get extra buoyancy (would any DIR diver really do this without a second thought?) Ok, I can hold a lift bag for extra buoyancy but a working wing is better and safer. So, balanced rigs: yes. Double bladders: also yes.
- No computers: Takes some of the fun out of diving. If I plan to look at a wreck at 10m but then decide to follow a big fish down to 20m I want the flexibility to do this without having to go and write a new dive plan first. Sometimes the dive plan can be "go and have a fun dive".
Are there any other DIR guidelines others will not adopt, or would anyone like to convince me I am wrong about any of these points?
Lamp in the same hand as the compass also disables the compass because of the current in the wire. So I switch my lamp over to my scooter-hand (right) when I need to read my compass. Otherwise, lamp in the left hand is all you can do if your right hand is holding onto the DPV. GUE-DIR protocols often have 2 common denominators: (1) caves and (2) DPVs. Therefore when either or both of these common denominators is applicable, then the GUE-DIR protocols normally make perfect sense. Normally.
Lamp in the left hand & compass on the left wrist with DPV handle in the right hand makes perfect sense.
I have never been a fan of all stages on the left. I completely agree with you there.
My drysuit is my 2nd bladder, therefore I do not need 2 bladders in my wing.
I am planning to buy 2 helium computers someday, as soon as they make one that is reliable. In the meantime, I run V-Planner profiles for my planned deco dives, and memorize the profiles. That is using your head, in my opinion, better than the various on-the-fly methods. Therefore my SUUNTO is mostly used in gauge mode next to my backup UWATEC timer.
For deco, the rule of 2 OF EVERYTHING should not be violated. And your buddy's computer does not count, as that would make you buddy dependent, which is also traditionally taboo. Therefore I would never dive deco without 2 gauges on my wrist.
What other things would I never do?
Go thru deco without my mask.
Limit my choices in drysuits.
Limit my choices in DPVs.
Limit my choices to obsolete LP steel tanks.
Limit my choices to dry gloves.
Limit my choices to "standard mixes" thus violating the principle of "best mix."
I hope Pete and his MODs don't get displeased with my responses to your questions, Barry. I am only answering them honestly.