1. Preheat your smoker to 225°F. Coat the tri-tip with Lillie's Q-Rub. Place the tri-tip on the smoker and cook until a meat thermometer inserted into the thickest part of the meat registers 130°F, 1 to 1 ½ hours.
2. Remove the tri-tip from the smoker and allow to rest 15 minutes. Thinly slice the meat, against the grain. Serve with Lillie's Q Smoky or your favorite Lillie's Q sauce.