jbichsel:MikeFerrara,
I am in total agreement with you. Horizontal is definately the preferred and in my estimation safer way to ascend and descend. I also believe that it is the preferred way to teach/learn skills. It takes some getting used to after being indoctrinated to perform all skills kneeling on the bottom, but I have yet to come across a diver that stops his dive, kneels on the bottom to clear his mask. But they are probably out there.
Hi Jerry, nice to see (read) you.
I haven't seen divers lighting on the bottom to clear a mask either. What I do see though is just about as bad. Whenever they need to do anything whether it's clearing a mask or something more involved, they want to go vertical. When they do that, they often lose control of their buoyancy especially if they were in a bit of a head up attitude in the first place (meaning that they were diving negative rather than neutral)
We all want to go vertical because we spend our whole non diving lives vertical except when we are sleeping.
Perfoming skills while in a "real world scenario" seems to make the most sense. Teach in an attitude that you will most likely be in while diving.
Sure, maybe present the skills in shallow water kneeling for the first time, but once in the deeper water, horizontally hovering seems more productive and real.
I don't think that how the skill is introduce is as important as how it's being done at the end. Personally, I found it worked better for me to try to keep students horizontal from the beginning even if they need to start out in contact with the bottom. Not to mention that some students actually have trouble getting the hang of kneeling (they fall over, especially the big floaty ones) and are often given extra weight to make kneeling easier. I just let them lay down.
I wish we could get the training agencies to see the validity of this and implement this as SOP.
I don't know that it will ever happen. My change of thinking came the hard way. First I had problems...then I was an instructor and my students had problems and then I started putting together the connections between the way I learned and was teaching and all the problems I had and saw others have. I was way too slow about it for it to be anything to be proud of. LOL
I think that practicing skills in a realistic diving situation before the course is over is the key. My wife who is now a very accomplished diver will tell you that the most afraid she has ever been under water was a night dive in a local quarry as an AOW diver when she had trouble with a leaky mask and ended up alone on the surface. The scary part was the uncontrolled up and down she went through before landing on the surface. I had a similar incident on a wall. I think I was a DM at the time. I don't remember if it was a leaky mask or an itchy nose but I decided that there wasn't any reason that I couldn't take the mask off to fix the problem. When I put it back on, I took a big breath to clear it, started rising and felt a pain in my chest. I promptly blew out all my air and plumited. Once on the bottom I decided to just stay there until I could see again and when I cleared my mask my wife was nowhere to be seen. Once I started doing the up and down dance she did her best to stay with me but apparently went up while I was going down. LOL
It occured to us that those dives could have turned out much worse with all the ups and downs and buddy seperations and we spent the next few dives in shallow water teaching ourselves all the normal skills midwater. We weren't going to do any kind of a dive in any environment untill we had reason to believe those things weren't going to happen to us again.
One thing that we quickly learned is that you do not take a deep breath in preperation for clearing a mask A deep breath works ok if your planted on the bottom with lots of weight but it can be a disaster otherwise. You don't need to look up at the stars either. Breath normally (except for exhaling out your nose) while still using your breath to control buoyancy and giving buoyancy/position control and buddy contact the priority as apposed to placing all your energy into clearing the mask. A diver won't learn those things if they are always on the bottom and they could be in trouble when things have to be done midwater...unless of course, they have trouble and sit down and reinvent the round weel on their own like we did because they were given a square on in class.
Once I started teaching I was still pretty stuborn about sticking with the book until I just couldn't justify it anymore. I don't think there is any of this that doesn't make quit a bit of sense when one gives it some objective thought. Once you let go of the idea that the guy who wrote the book must know what's best things move along pretty quick.