http://weberkettleclub.com/forums/index.php?topic=46528.0I made this basket with 3 charcoal baskets, but anything similar will work to limit bowl contact if you want to do something else more DIY. If I was doing something more DIY I would make the basket lean out with the shape of the bowl and make it taller so it is right under the grate straps.
If I am only cooking 4 or 5 pizzas I usually do a heaping chimney full of lit charcoal briquettes and dump them in a slight C formation in the back. Then I will put the stone on and lid on. After the charcoal has been on a few minutes to start heating the pizza stone I will throw wood chunks in every few minutes until I get it up to temp and occasionally between pizzas to keep the temp up.
If I am doing 10+ pizzas then I might do a chimney of charcoal on top of half a chimney of unlit charcoal just to keep my fire going longer.
It isn't the most efficient method fuel wise, but it works well for pizza.