I don't agree with those who say that you cannot call yourself a DIR diver if you dive solo. GUE standards may tell you that you are not permitted to remain certified as a GUE diver and participate in solo dives, but that would be like the Roman Catholic Church teling me that I can't be a priest if I decide I want a to have a wife. It doesn't mean that I'm not a Christian, rather, it just limits my participation within that organization. In GUE, your level of participation as a solo diver is restricted to the no can do department. But, just as you can be a priest and hide a secret wife, you can be a GUE certified instructor and break the rules. If JJ dive alone, has he forfeited his right to be able to call himself a DIR diver? Or, is he a DIR diver breaking the rules of GUE in the same way that a priest would be breaking the rules of the Roman Catholic Church?
As was pointed out, GUE doesn't have exclusive control over DIR. Those familar with NAUI Tech and the NTEC will see that they have adapted the slogan, "Just do it right!" as is found in the NAUI Tech instructor manual. The Catholic Church doesn't have exclusive control over Christianity, and like the Protestant and Greek Orthodox Churches, there are pockets of DIR practioners of many groups as well as organizations like NAUI and PDIC Brasil.
So, there you are an experienced DIR diver and you start diving solo. Do you not understand the equipment, the planning, the philosophy and the procedures that make for DIR team diving? Are you not just a DIR diver who is now diving solo the same way that a Christian is still a Christian when committing a sin? Do you not understand the fallout to a sin like adultery, understand why it is immoral and what the consequences can be to a family, yet choose to break a cardinal rule of your belief system the same way as you understand the risks and possible consequences of solo diving?
Note: I would have discussed a philosophy like DIR compared to another philosophy such as that of the Utopians, but I thought that drawing a comparison to a religious belief system would be more easily understood.
Some would argue that solo diving makes a diver sloppy when it comes to team awareness. Some divers would become sloppy while others would not. Hasn't anyone played both team and individual sports? Can you hold a tennis racket and focus solely on the opponent and the ball and the techniques of tennis one day, then hold a lacrosse stick the next and be aware of your teammates, the opposing team, and the skills needed to play lacrosse? My friend, Mark, on my lacrosse team in college seemed to have no trouble playing attack with me then playing tennis. Can you be a triathlete and swim laps alone in a pool or swim open water in training and competition one day and then gear up for a cave dive the next? Doesn't the brain know the difference between a Halcyon mask and a pair of Swedes? The arms know not to reach and pull and the legs know not to flutter in a cave? Where's your buddy in the melee of a triathlon swim? What if you get hit hard enough in the face to stun you and the lifeguards miss it? Are you not a DIR diver taking the risk of swimming in such a race?
If comitting to excellence means improving your training, would a solo diver course not be of any value? I was taught to solo dive in caves (most definitely violated standards & most definitely a helpful course!) by an instructor who prepared me for the team breakdown. I learned things that I had not been taught during my GUE training. One of my favorite sayings is Bruce Lee's, "Absorb what is useful," which I learned when doing martial arts as a kid and remembered it throughout my life. I was delighted to see it appear in the Fitness for Divers book.
I think that what happens for many DIR trained divers is that they had less than adequate recreational SCUBA training and they discover DIR, or, those with experience discover DIR and are annoyed that they didn't learn the skills sooner and have to learn to dive all over again. For some, the skills come a bit easier and for others they must work and work and work. But, once developed, the diver becomes afraid that he or she will lose the "edge" because diving with a team means being seen by the team and there is a desire to impress the other team members. How do I look in the water? Am I going to get flak for my knees on this dive or is my frog kick correct? I want to be the best one in this team! I want everyone to know I'm a good diver. I want to win so and so's approval. I want to pass so and so's class next month. Diving can become a personal and a team competition. For some other divers it's depth, distance and duration in which they try to self-actualize. For DIR divers, these are not normally stresses (good thing), but diving becomes skills, trim, buoyancy, position in the water and divers put pressure on themselves or feel peer pressure to be perfect. Because of the fear that somehow one will lose muscle memory or become sloppy, some DIR divers will not stray from DIR practices.
However, some divers can transition from working underwater as commercial divers and being very aware of where they've set their ground, to spearfishing alone being aware of risks, to spearfishing in a group being aware of others so as not to shoot them, to going cave diving and possessing the right team attitude, gear, skill sets to solo sidemount diving.
Where you are in your diving career and what skills you've developed dictate how you dive and with whom. If you are new to GUE and NAUI Tech and even PDIC skill sets maybe you should dive dive dive dive dive that way to master the craft the same as you would practice for any other sport or team enderavor. Studying solo diving can only make you more educated.
Diving solo? Are you still a DIR diver? Maybe not that day. If forfeit your right to be "DIR" by solo diving, what other acts might be a "sin?" Drinking Coke instead of water before a dive? Are you ousted? Eating a high fat meal? Diving without being in PERFECT physical shape? Are you not endangering your teammates if you have any body fat to a percentage that might warrant a trip to the gym rather than scootering on a dive that day?
There is one fatal flaw to DIR. It has become a philosophy and the philosophers could spend decades arguing what is or is not DIR. However, most practicioners are happier defending it and diving it in its present form without putting too much thought into all of the nuances that philosophies tend to sprout. DIR is the philosphy of human group survival and interaction on a small scale, yet will find itself subject to all the problems of humanity that we have now on a global scale. It's easier to define the borders of whether or not you are or aren't DIR on a broad scale much the same way that someone can be defined as a Jew, a Christian or a Muslim, but more difficult to define DIR within the community much like a sinful Christian?
Are you DIR if you dive alone? I don't know. Are you a Christian if you commit adultery? The arguments can be made with everything from standards and procedures of various agencies to Bible verses.
I guess if you believe you are DIR to the best of your understanding of what DIR is, you are, in fact, DIR.