I had good success this winter (December 13-15) on the last few days of deer archery in northern Ontario (-30's) just sitting in my pop up blind with a Buddy heater (single burner). It was surprisingly quiet, except starting it, and had about 20 deer come within 30 yards of my blind. It's nice having the adapter for the 20 pound propane tank that way you aren't fooling around with the 1 pound propane tanks every couple hours. Next year I will be using the same set up, but not waiting until the coldest days of the year to do it! Don't just count on your heater, it is very important to dress in proper layers. I use two layers of Under Armour base layers (skin tight and slightly baggy), a good warm hoodie (also UA in my case), but wool is a gem as well. You want to make sure you aren't dressed so baggy you can't move comfortably and quietly. With good base layers, the outer layers is all up to you and your clothing preferences, but something that will break the wind, provide some insulation, and is quiet when rubbing against itself will sure help. Good luck next season!