I recently bought an 18.5 WSM and i have put it on my (wood) deck. I put it up on concrete blocks to get it a little further off the boards for heat reasons, and it doesnt even get very hot under the heat deflector anyway. But my question is on when using your chimney. I have an old ECB that i have been using to set my chimney on when lighting, but when i go to dump in the hot coals i always have some of the small pieces of lump fall through the grate on the bottom of the chimney. Then i am running around getting those hot little suckers off the deck. Is there something you all have under your smokers that you dont have to worry about those as much? I keep a fire extinguisher right inside the door for that reason, but i am thinking like maybe a small fireplace hearth or something.