Thanks for the PM...I used the chimney method this afternoon when I cooked 4 chicken thighs. I knew it would take only about 15 to 20 minutes, so I used only half a chimney of KB - could have used even less. Got the temp to hold at 350 and it worked great. At the end, I put the thighs over the chimney for nice crispy skin.
Will definitely be using this method again.