You put 2 or 3 on top of your pucks you load in. You put in the exact number you want, and the bubba pucks go on top. They push the last puck up onto the heater plate, thus using all of them. I use 3 in each smoker. Some just use 2.
Bill
<i>There is room on earth for all God's creatures....on my plate next to the mashed potatoes.</i>