Congrats on your new gadget.
I just received my Cobb Grill dome extender. Now I can use my small chicken roasting stand without it hitting the top of the dome and preventing it from seating closed. I'm pretty sure a full sized roaster stand wouldn't fit, even with the dome extender. I can use the roasting rack for full sized chickens.
Two quick tips: EZ OFF Fume Free oven cleaner makes clean up a snap with no elbow grease. I used ajax and other cleaners that wouldn't even phase the baked on brown haze. EZ OFF cleaned it in minutes.
The roasting rack can be easily secured to the grilling plate. Once it's seated on the grill plate, cut up 4 wooden skewers and force them into the wire feet that protrude below the plate. Now when you use the prong tool to remove the plate to add coals, the wire roasting rack won't awkwardly lift up also.
Don't forget that Cobb will be getting in more Lokkii charcoal disks soon.
There's a box of 48 on eBay right now for $65 free shipping. A good deal if they are still relatively fresh stock ($1.50 ea).