Where to stick it
Most grills come with cheapo thermometers that are an afterthought to manufacturers and are usually bought bulk from cheap producers. To make matters worse, the probe is located high in the dome well above the food. Unless you plan to eat the dome, this is a bad place for the thermometer. You need to know the temperature where the food is. So put the probe about 2" to the side of the food (it is cold and there is a cold air bubble around it), and about 1" above the grate (it is hot).