I use the cold water in the sink method. It gets a piece of meat defrosted pretty quick. Since I don't freeze using a zip lock (only vacuum pack), I don't have the problem with the air insulating the meat or allowing the bag to float in the sink. I change out the water every hour to hour and a half. Of course you couldn't do a pork butt in a couple hours, but a steak or something around a few pounds is no problem.