Set up the grill. Clean and lightly oil the grill with a paper towel moistened with cooking oil. Make two groups of 4 (5 if your in a hurry) charcoal briquettes as close to the edge as possible. Put the rest of the briquettes somewhere safe where they will still burn. (Dont leave them in the chimney, they will burn too fast. I use a teracotta flower pot) Put some water into the clean tuna fish can and set that in the middle of the grills bowl. Grab a small handful of hickory chips and shake the water off. Place some of moist chips on each group of coals. Place the grill over the coals at the highest setting, giving the most distance between the coals and the fish.