Some times the simple way is one of the best ways. First off, they go on the pit with nothing but a little olive oil and kosher salt. As for cooking temps I try to start a little under 250 but cook a little hotter as I go. Couple hours in, I'll rotate as needed. Couple more hours or so and I finally dust them with BBQ rub and put each rack in a foil "boat" for the last 30 mins or however longer they might need. The foil boat is mainly to just protect the edges from overcooking.