Ceramic heat deflectors for kettles

[Marzipan]

friendly nudge to see if my summary above is what's going on...?

[avega2792]

so I understand the idea...you want to use a ceramic heat deflector to simulate indirect cooking while using all the available grill space?

Yes, I do that with my 18" kettle and a pizza stone but now I want to set up my 22"kettle like that for briskets or more racks of ribs. 

[Marzipan]

makes perfect sense.

I wonder how a pizza stone would work vs. a cast iron griddle...and how important thickness of said stone or griddle would be.

[avega2792]

The pizza stone works great in my 18"er. I was going to buy a Lodge griddle but it was smaller than the pizza stone so I went with the stone for more space.

[Jon]

I light a second kettle, then put a potted plant between them when I need more room. Ceramic Insulation!

[Walchit]

Pics?