Dan, having Bob watching would ruin my SAC rate too, I'm sure!
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Yeah..when we are shooting, we do NOT want to take our hands of the camera to pull dump valve or to inflate....we need rock steady camera, both hands on while shooting. Most clips wont run more than 2 or 3 minutes.dan how about when shootin vid, I review yesterdays dive a little bit ago and a sealion buzzed around and I noticed I just kept sucking, I breathe in and a little more and a little more. The vid told me that and not sure if it was buoyancy or just not letting bubbles out as sealions like to bite bubbles. I mean running vid especially when in the 5th and 6th atm's, I use breathing for buoyancy to keep vid quality and add air fewer times for this reason.
And this gets to how hard it is to convey ideas like this on a discussion thread. My expectation, is that most cave divers with good bouyancy and trim, make their wing inflation adjustments to the lung volume they plan of averaging throughout the dive, and to the breathing rate...getting an average swing up and down, and the wing needs to have inflation adjusted to this average....I do NOT think OW divers think about this, or even are aware of such a thing.
I absolutely agree that doing too much lung boyancy wastes gas....while normally I would never be guilty of this in the ocean, during Fundies open water dives with drills constant throughout, I WAS guilty of this overuse of lungs for control, and my sac rate became very average, instead of very low as usual.
I'll blame this on performance anxiety having Bob watching
My expectation, is that most cave divers with good bouyancy and trim, make their wing inflation adjustments to the lung volume they plan of averaging throughout the dive, and to the breathing rate...getting an average swing up and down, and the wing needs to have inflation adjusted to this average....I do NOT think OW divers think about this, or even are aware of such a thing.
One of these days you will decide to grace us with your presence on a dive....and you will see I am not giving up on swimming at "cruising pace" or "spearfishing pace"....I do plan on being in many penetration environments, in which I will need the ability to stop and be without movement....
Even in doubles and with jets on, I sincerely doubt anyone, even you, will complain about my "pace"
p.s.
We are planning on going out on Narcosis this afternoon, if you would like to join us !
Edited to add: Before you read this, I just got to thinking, and I realized that what I'm addressing may not even be what you are talking about, but rather maybe your point is about some part of buoyancy that I don't even understand yet, thus proving your point. If so, then please pardon my post (which I'll leave here anyway).
******
This seems to broad to me. I speak as an OW diver. I won't even begin to say that my buoyancy was polished at dive 20 (or even now), but I will say that by then I had figured out that one uses the BC to set up their basic buoyancy and then lungs for fine adjustments. I'm sure I don't do it perfectly even now, and I probably sometimes over-use my lungs compared to the ideal; but I don't either JUST use my lungs or JUST use my BC.
Rather, I get the BC close, then use lungs a bit, and then if/when the lung part starts to become too "obvious" (i.e. too much at top or bottom of lungs), I adjust the BC to get myself back to "the middle" again. I'm pretty sure usual buddy does the same thing (it just seems logical?), and I can't believe we were that special, in the group of OW divers -- especially in our <25 "early" dives.
I can't speak for every OW diver - but that's what I'm saying: I find it hard to believe that "OW divers," as a group, don't "know" or think about this at all (?). My early dive training was about as mediocre as it gets, but just diving and working on buoyancy outside of any class made the BC/lung relationship reasonably clear (granted, most of my dives have been in "easy buoyancy" Florida, where a 5mm suit is the most extreme; but then that's the area you are speaking of as well).
Blue Sparkle
I don't know for sure if it was the camera or being in the water with yoda but we did suck some air at 25ft.Dan, having Bob watching would ruin my SAC rate too, I'm sure!
I think it is sad. You are getting old.
Not so long ago you were all about efficiency and minimal drag and the ability to move efficently in high currents. I even remember a Volkerism about being able to keep up with dolphins....
One of these days you will decide to grace us with your presence on a dive....and you will see I am not giving up on swimming at "cruising pace" or "spearfishing pace"....I do plan on being in many penetration environments, in which I will need the ability to stop and be without movement....
Even in doubles and with jets on, I sincerely doubt anyone, even you, will complain about my "pace"
p.s.
We are planning on going out on Narcosis this afternoon, if you would like to join us !