I have a boot dryer, not sure if it's the peet one but they all look exactly the same to me. It uses gentle heat which is important for a shoe/boot because the rubber sole can shrink on some footwear.
I don't ever remember mine not being dry the next morning. I don't know what I'd do without my boot dryer, I love the rain so I'm usually out in it when it rains. Sometimes I don't wear my waterproof boots, sometimes they spring a leak.
I agree, wet feet and boots are the kiss of death on a week long hunt. I have a PEET unit. I have never checked how long, they are always dry the next day, no matter how wet they were. If I was somewhere theres no electricity i wouldn't hesitate to buy the propane unit. They're only twice the price of the plug in. http://www.bing.com/shopping/peet-pr...ryer&FORM=HURE