How in God's name do you move one of these once it's full ? I just recently bought a better bottle ( 6 gallon ) as I'm tired of lugging 6.5 glass carboy's. now that actual moving of the better bottle is much lighter but when you lift them the airlock sucks back and water, vodka, starsan whatever goes down the center tube. I've tried lifting from the bottom , the handle that goes around the neck and not matter what I do it sucks back. How do you move these things ?