You can also put a candy thermometer through the top vent. The reading that you get on that will be approximately 15* hotter than the temp at grate level.
You should plan for 1.5 - 2 hours per pound for cooking at 225* - 250*.
2 OTG One red one black
22 1/2" black Bar-B-Kettle with rotisserie ring
Brinkman dual zone charcoal grill
Webber Silver Genises B
3 burner camp stove