| It's called the Frenzel technique, there's a few websites which describe it, try a search for Canadian freediver Eric Fattah, his site has a good description of it. You shouldn't actually swallow any air with it, you are using the tongue as a piston to push air into the ears. It is quite difficult to learn.
I'm no medic but I'd doubt padding stops will negate the effects of a shunt opening.
__________________ "I hate to advocate drugs, alcohol, violence or insanity to anyone, but they've always worked for me" Hunter S Thompson http://www.snp.org |