victorzamora
Contributor
Hey Mike, I'm glad my post helped clarify where I was coming from. I was going to go through your post point-by-point until I saw Andy's post handling that pretty clearly already. I don't want to reiterate what he's posted, so let me just add a "+1" to everything he's said.
Andy and I have very different styles of sidemount diving, and we each have our reasons. I understand his reasons, and am in full support of the compromises he made for his style. I believe the reverse can be true, as well, in that Andy understands why I do things the way I do it. If I were diving in Andy's conditions frequently, I would probably change to his style of sidemount diving. In my training and my experience, I have learned how to be a compatible team mate with any other diving configuration I can imagine. I've done every drill imaginable with people wearing no tanks, one BM, one SM, two BM, two BM and a stage and a deco bottle, CCR, SCR, two SM, and many different variations of each system. I am fully confident that I can dive in any mixed team configuration you could dream up.
I do see things as black and white....either there's a good logical progression, or there isn't. I didn't choose the same setup Andy did, but as has been said, he had a different set of parameters leading to his style. I get it. I don't get the UTD SM system.

On the topic of scalability and consistency....this is one of the biggest lies perpetrated by UTD, and one of my biggest issues with the Z-SM system. Let me ask you, do BM doubles share LP or HP gas? There's a difference. With BM, do you have to turn your tanks on and off every 300psi? How about single-tank SM? There's another difference. Kevrumbo, either in this thread or another, admitted directly that there are more possible failure modes in SM than BM, and the two are different, and have different methods of responding to them. This means, to me, that the two are very different. Also, if UTD is offering a SM class, then clearly their system is not SO compatible with BM that a SM-specific class is no longer required. Once you start talking about the Mx Rebreather, you add a HUGE list of differences between the other two systems. If you want true consistency, ban SM and CC completely. Heck, ban single tanks while you're at it. And any additional tanks beyond a single deco bottle. But make that a requirement so nobody has to change anything, at all, ever.
With the SM that I believe in, I know PLENTY of people that go from OW training through Full Cave/Trimix/DPV/Deep Cave using the same principles and fundamentals taught in their OW training course. It does not require the additional expense, complexity, and failure points of the UTD system to accomplish that. It simply requires a good instructor from Day 1. Look at the logo for Cave Adventurers. The guy in the logo (I know him personally) was on his 25th dive ever in that capture. His tanks were perfectly aligned, his trim was perfect, his posture was perfect, and he was in a cave. He's never had a tank on his back, and he's never changed any of the principles he was taught on Day 1.
Andy and I have very different styles of sidemount diving, and we each have our reasons. I understand his reasons, and am in full support of the compromises he made for his style. I believe the reverse can be true, as well, in that Andy understands why I do things the way I do it. If I were diving in Andy's conditions frequently, I would probably change to his style of sidemount diving. In my training and my experience, I have learned how to be a compatible team mate with any other diving configuration I can imagine. I've done every drill imaginable with people wearing no tanks, one BM, one SM, two BM, two BM and a stage and a deco bottle, CCR, SCR, two SM, and many different variations of each system. I am fully confident that I can dive in any mixed team configuration you could dream up.
I think you look at this very black and white
I do see things as black and white....either there's a good logical progression, or there isn't. I didn't choose the same setup Andy did, but as has been said, he had a different set of parameters leading to his style. I get it. I don't get the UTD SM system.
What I said was he is one of the best cave divers. That's not really all that personal. It was Edd Sorenson, and even his biggest haters will admit his incredibly high level of proficiency and his huge contributions to Cave Diving and Sidemount diving. His fans could argue that he's the best, but that's not the argument I'm here to make. My point was that a well respected, highly capable cave instructor (known for being a bit of a buttEdd) put me through a nonstop barrage of drills putting my SM system to the test, and I passed. My SM system is very similar to his, and lots of his students, and that system/style has REALLY been pushed to the limits, and gets pushed to the limits frequently. He and his dive 4+ hour dives frequently, in a cave, with setups and the whole works. If it's good enough for them, it's good enough for anyone doing anything less than a multiple-stage, multiple-scooter, deep, deco, cave dive.also regarding who you think was the best instructor in the world. (Who was it, if I may ask), very personal I would think.
I'd love to know who. Not all "famous" instructors are good.Again, I understand the independent SM system, I have been trained on indep. Sm, by one of the worlds most "famous" Instructors btw.
Good. That would be a VERY foolish thing to sayAnd you wont hear me saying it is all bad...

What fashion would that be?The z system is a system for divers that want to dive in another fashion.
I love the DIR way of teaching. If I weren't such a fan of SM, I'd be a GUE diver. My last 2 backmount rigs have been Hogarthian. My wife (recreational-only AOW diver) dives a Hogarthian BPW with a Can light, frog-kicking, with everything routed the DIR-way (except the boltsnaps on my regs are zipties instead of cave line, and she uses swivel joints on her regs). My biggest issue with the Z-SM thing is because of how far it goes AWAY from the DIR principles. I truly believe my system is much more in line with the true intentions of DIR than the Z could ever be.Obviously, when you don't embrace the teaching and diving philosophy that comes with it, it becomes hard to understand the Z.
The strength can be found in consistency and scalability of the system and the DIR way of teaching, a tool for divers with a DIR background.
On the topic of scalability and consistency....this is one of the biggest lies perpetrated by UTD, and one of my biggest issues with the Z-SM system. Let me ask you, do BM doubles share LP or HP gas? There's a difference. With BM, do you have to turn your tanks on and off every 300psi? How about single-tank SM? There's another difference. Kevrumbo, either in this thread or another, admitted directly that there are more possible failure modes in SM than BM, and the two are different, and have different methods of responding to them. This means, to me, that the two are very different. Also, if UTD is offering a SM class, then clearly their system is not SO compatible with BM that a SM-specific class is no longer required. Once you start talking about the Mx Rebreather, you add a HUGE list of differences between the other two systems. If you want true consistency, ban SM and CC completely. Heck, ban single tanks while you're at it. And any additional tanks beyond a single deco bottle. But make that a requirement so nobody has to change anything, at all, ever.
With the SM that I believe in, I know PLENTY of people that go from OW training through Full Cave/Trimix/DPV/Deep Cave using the same principles and fundamentals taught in their OW training course. It does not require the additional expense, complexity, and failure points of the UTD system to accomplish that. It simply requires a good instructor from Day 1. Look at the logo for Cave Adventurers. The guy in the logo (I know him personally) was on his 25th dive ever in that capture. His tanks were perfectly aligned, his trim was perfect, his posture was perfect, and he was in a cave. He's never had a tank on his back, and he's never changed any of the principles he was taught on Day 1.
So is IndySM. So is backmount. It's not really unique.This is an awesome tool for an instructor...and I am talking from rec to full cave...and it is all consistent..how cool is that?
Any good SM diver should be able to spool up to diving doubles easily/quickly with a good instructor. The same can be said the other way around....even without the extra hoses and failure points of the Z.Now I can do an "advanced" course on the z system and the last dive my student goes back to backmount....zero issues...you see it ?
Maybe, but nobody has been able to provide me with one. Also, humans aren't always logical creatures. There are plenty of people that would dive the UTD thing without a good reason.There must be a reason why these people want to dive the Z system, not?