Meat Master Bruce Aidells shows us his fool-proof technique for grilling a Thanksgiving turkey on a gas grill
Set an aluminum drip pan at least as big as your turkey on one of the burners UNDER the cooking grate to catch drips before they cause an inferno! Turn all burners to high, close the lid, and heat to 300° to 325º. Now turn off the burner under the pan. Maintain the heat from here by adjusting the other burner(s).