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most of old Soviet breathing apparatus (closed loop) was eqipped by nose clip. Also isolated gas masks (that works on peroxide)....remove your mask and put on the nose clip. Then replace the mask, and again dive to the bottom, this time blowing gently into the mask as you descend. You will find the equalizing, still using the Valsalvo maneuver, easy and hands-free. I use it experimenting with my Hammerhead swimming device while using the dolphin kick. If you cannot equalize your mask, abort and loosen the nose clip.
This technique for hands-free equalizing is as old as skin diving itself, but has been mostly lost to current generations...
Interesting, must try that. I think I know what you mean as I think that's what I do to block out loud noises (like a truck passing you when your walking). You just "hold the position".I've descended very fast and far before and just left the eustachian tubes open the whole time by doing a sustained yawning maneuver. I can feel a constant and smooth exchange of air and never have pressure build up and have to do the clear every few feet thing.
Once you figure it out it's a wonderfull skill to have.
Most of my constant equalization happens when I'm freediving. I originally found out about doing this method when I asked a pro freediver about how those guys equalize so fast that ride sleds down to 600 plus feet, and he explained that this is the only way they can do it. I'm no where near that level of freediver, I might have gotten to fifty feet in the past on a good day, but the method remains the same.
An old scuba instructor and ex Navy diver told me about the same thing years ago. He said if I ever got tired of the head swimming and worn out plugged ear feeling after a day of diving to try this method. Your ears will never get over inflated because they will never be pushed beyond ambient pressure.
Sometimes yes. Sometimes no. Most of the time I don't keep track. As long as you have your hands free what's the difference?