scott,
From what I have seen and read, authentic Neapolitan pizzas, like those made in Italy, tend to be smaller in size than our pizzas, around 10-12 inches, and the doughs are shaped into skins on a smooth marble or marble-like surface. It is then fairly easy to transfer the skins, dressed or not, onto a peel (which often look to be metal) in preparation for placement in the oven. This would seem to be more difficult to do if you were to try making a 16 inch size. Then, you might use the string trick that Jose at Patsy's in Harlem uses to make sure that a pizza dressed on a board won't stick to it.
Peter