Bobbill,
I use a weber tooIn my setup, I use a kiln shelf stone capable of 2200 deg, except it can not handle direct flame, but so far occasional flame lick is no problem. Instead of a steal plate, I use a heavy duty aluminum ring to elevate the stone off the grate, for two reasons:
1. To get a little extra distance from the low flames that happen when I first dump a starter can of briquettes that are all lit and white.
2. To get the pizza closer to the dome, so the reflected heat will cook the toppings faster.
Also I line the lid with double aluminum foil. Usually I can get 3 or 4 cooking sessions out of a single lining. My thinking on the foil is to get more reflective heat.