Once the grill is hot (you can hold your hands an inch over the grates for no more than 2 seconds), dip a tightly folded up paper towel in olive oil and use tongs to wipe the grill grates. Then place a pizza dough round on a lightly floured (or you can use cornmeal) rimless cookie sheet (or pizza peel if you have one). Let the dough slide off the cookie sheet onto the hot grill grates. Close the lid of the grill and let cook for 2 minutes.