Sorry if i'm butchering the spelling of "Valselva" if that's correct.... i was just wondering if im not doing it right, because i can not get it to work past 25-30 feet, and i can't do the Frenzel yet. Can anyone get the Valselva technique to work in deeper water? I don't really see how i could be doing it wrong... all you do is plug your nose and blow the pressure out your ears as far as im concerned. Either way, i'm going diving this weekend and i would like to get it to work better so i don't have to be in such shallow depths.