Everyone finds their own way, on my stumps i just clip the guru to the thermo stem. I will say they do not always match, so you have to pick one to go by. If your overcooking, then lower the temp, lower the time, and check more often. Your timelines can and will change from cooker to cooker, go by feel, and look. I wrap when i like the looks, color, and its done when it feels done.
I light the cooker with a map torch or propane torch, i didnt like dumping hot coals into a shoot with my feet below.
I do not light much, then i let the guru bring it to temp.
Fire & Spice Cook Team
Backwoods Authorized Dealer
Old weber gasser
Uuni pellet fired pizza oven