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You don't have to. Your just adding liquid during a stage(apple cider/juice, honey, beer, etc)
The X-X-X rib cook addresses the possible phases of the cook-X bone side down; X in foil; and X with sauce. Many run X-0-0 meaning nothing but the ribs on the cooking grate til they pass the bend or toothpick finish test. Experiment with various combinations til you find what you like. There are many ways to cook ribs including Mickey's "Turbo ribs". It's all what you enjoy.