DiveTub:
I do understand what you're trying say & I didn't forget the other variables. It’s something that I consider a graduating proficiency - CL's should be on minimum loop volume, or optimal loop volume for given make and model. Additionally, this thread is not about newbie training. It seems to be about trim and buoyancy after a course.
The dearth of divers that I see exercising less-than-ideal trim and buoyancy is nothing new. It crosses from new CCR users to "experienced" openwater techies on OC. It amuses me when someone cannot hold 6m without the use of a line. Of course, there are exceptions like in a ripping current. It also irks me when divers are not in an optimal horizontal position during controlled stops. I won’t bore people with those details. Pretty sure that’s been covered on SB before.
"Reporting" these divers to their instructors - what? It should be the reverse no? The funny thing is untrimmed divers who see you in ideal trim do not often make the connection that they need some re-education, or tweaking. While swimming at depth the conventional thought for “non-trimmers” is that if I power through (swim hard) I will be horizontal. That’s true, but you expend a ton of energy and metabolize a ton of oxygen too. Additionally, you can’t power through at a deco. stop hanging onto a line. As a GUE trained caver (OC) I will state that Fundies trim & buoyancy principles should be integrated into every CCR class.
Going back to depth - it's always easier to dive where Boyle's Law isn't as great a factor, but the true test of trim and buoyancy is the ability of the diver to hold position at crucial stop depths regardless of deco. or not. The no-deco argument is somewhat moot because safety stops are deco. breaks.
I do appreciate a good discussion. Attached is a pic. from a tech dive. I took my stop much lower because I kept getting batted on the head with fins. Sadly, these guys never noticed that I was maybe doing it a little bit better.
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