Not on top. Under it. You get two cinder blocks, and a grill. Place the cinder blocks next to each other with a nice space in between. Lay the grill on top of the cinder blocks. This isn't my setup, but it's a visual for you: Place the chimney on the grill and light the coals. The chimney will get the grill nice and hot. Knock off any excess ash, and then place the meat on the grill. Place the chimney over the steak. Depending on the size of the steak (I suggest ribeye or porterhouse) cook 90 seconds on each side for rare or 2.5 minutes each side for medium rare. Take the steak off and place it on a plate, covering it with foil. Make it air tight and let sit for 10 minutes.