I do it and it is really very easy...much easier than you would think.
Spread olive oil on a cookie sheet, spread the pizza dough on the cookie sheet.
Invert the cookie sheet on the hot grill leaving the cookie sheet on the grill. after just a few minutes, take a peek to see if the dough has fallen from the cookie sheet. when it has, remove the sheet.
When the dough is done on the grill side, flip the dough and cook it on the other side. It will be crusty and easy to turn. Then return the crust to the cookie sheet, put on the fillings and ingredients and place the cookie sheet with pizza on the grill. Close lid and cook till hot.
my favorite.
Drizzle crust with heavy cream, add carmelized onions, procuitto and goat cheese.