I use them, they are awesome, have you done your research on how to mazimize your use of them? 

Ok, I'll tell you how I use them. When your using the GG's figure it's about 150 degree hotter than your dome temp.

So, for example, if I'm cooking boneless chicken breast, set the dome at 450 which is about 600 GG temp.

Chicken Breast take a total of 16 minutes to cook. 4 minutes, then a quarter turn 4 minutes, then at minute 8 flip it over and repeat.

You can also flip them over and use the smooth side to sear, I often reverse sear tri tip this way. 

Remember to oil them up to keep the meat from sticking, after a few cooks you won't have to do that anymore.

g37 said:

No. I just read the manual. It says to cook a lower temp because  the grates get hot. True?

Yeah, you don't want them to get too hot.