So I have an 18.5" Weber grill I normally use now for indirect grilling. I have also tried twice now the snake method with charcoal. My questions is generally speaking to get a nice 225-250 temp how would i build the snake? Unfortunately the grill does not have a built in thermometer. Do any of you get consistent numbers using a particular charcoal build? I have been doing 2x2x1 rows. Also let's say I am hitting around 300 give or take as an example. Is there a way to bring the temperature down consistently to 225-250? Thank you all in advance.