PLACE ribs in smoker bone side down and generously spray every 30 minutes with a mixture of 1 cup apple juice and 1 cup apple cider vinegar, roughly burning 1 log of wood per hour. After about 2-3 hours, pick up the ribs and hold them in the center. If the rib bows, wrap in foil, if the rib is still firm and holds a straight line continue to cook, checking every 30 minutes.