So being new to the world of propane smokers I'd like to ask for some insights. I know that there are a million and one variables that make this a tough question to answer but rough justice how long does a 20lb tank last you guys (in hours)? I always keep a spare in the garage but was just wondering what I can expect out of it smoking around 225-250 degrees. I live in Georgia so it's not real cold outside. Any insights would be much appreciated.