Hi, I'm Kyle and i'm still pretty new to smoking. I live in Perry, OK and I built my smoker out of a 55 gal. barrel back in june and have had great success with it so far thanks to smoking-meat.com. i have only looked around on the forum a handful of times but it has helped each time so i decided to sign up. At the moment my smoker burns charcoal but i have been thinking of either converting it to propane or just buying a propane smoker, just have to do a little more research on it. If anyone could tell me about how long a 5 gallon propane tank lasts that would be helpful. Thanks.