I smoked a couple of the USDA prime Chuck short ribs I got at Costco. I simply used bovine bold rub the night before, and smoke them at 225F to an internal temp of 204F. I did not spritz them with anything, and didn't really miss it. doing the ribs individually, which is how they come at Costco, only took about two and a half hours from refrigerator temperature.
Chuck short ribs