CompuDude:Just curious: Would switching to a steel tank help, or are you more concerned with being sure you've nailed the skill under ANY circumstances? I would think it would be a lot harder to get "butt light" with a steel tank that never gets positively buoyant.
More concerned with the skill - especially since I don't have much trouble with it the rest of the time. I even made sure in the clip in question I was kicking into the current so that problems would be more evident.
Steel tanks are not easily obtainable around here (AL80's unless used are hard enough to come by) though I could always mail order one - plus no one can fill them to rated pressure In time I'd like to pick up a couple 120's or 130's though... but that's after getting a camera... and a second reg set... etc..
Aloha, Tim