How do you grill skewers?

Just toss them on the rack, or line rack with foil if you prefer less "char". However, take into account cooking times for the various things on the skewer. For example, if you have pork chunks on the skewer, these would need to be pre-cooked to be sure they are thoroughly cooked to avoid serious illness. Light veggies like green peppers or tomatoes require only a couple minutes per side, whole mushrooms a tad longer, any meat much longer. Marinating then pre-cooking any meat is recommended. Baste skewers with excess marinade as they grill.