Hi guys, I was just wondering if you have to preheat? I lose so much heat when I open my door to get everything in, can I just put my meat, my boiling hot water in water bowl and my bricks in at the same time and turn the OBS on. Then when it gets to temp, put the pucks in? I'm in Saskatchewan, Canada and we've had freezing rain all night and temp is supposed to get to 5 C today. My smoker is in a shed. Making ribs for a birthday supper tonight. Ribs will be at room temp and covered in rub.