I just tried a cedar plank last night. I will get some from Lowes, thanks for the idea. What happened to mine was after about 15 mins or so the planks dried out and the bottom caught fire. It got going pretty good, lots of smoke. I lifted the planks and sprayed the fire out and then closed the lid and let that smoke roll around in there for about 15 minutes and then lit the Q again and finished them up. It was absolutely wonderful. My daughter hates fish but had three helpings. The cedar smoke really cut the fishy taste out and made for some real nice mild fish. I may do this every time!!