Bought my 22.5 WSM first part of June and have done about 20 cooks. Call me lazy and cheap but I got tired of foiling the water pan outside using water and both sides without water. Kids are all grown, just my wife and I so do alot of small cooks. I decided to try another approach.
Bought a pack of 3 foil pans from Dollar General. Size is 16.5" long x 11" wide x 3" deep and cost was around $5. Set a foil pan on the lower cooking grate and DID NOT use the water pan. Have cooked 2 slabs of BB's several times and a 6 1/2 lb pork butt once. Ribs and butt turned out excellent. Used the same amount of KB I would have used with the water pan. Foil pan caught all the drippings and temps were very close to what I'd seen with the water pan. If you want to cook with water just pour it in the pan but be careful when lifting out as they are a bit flimsey. Just let the WSM cool completely before removing and support the bottom with your hands.
Plus you can soak the pan in soapy water for a day and the gunk will wash out easily. I have used the same pan for 4 cooks and they held up well.
You can get foil pans in all different sizes but don't know if you can find a size that would work in a 18.5 WSM. I just know the foil pan can't interfere with air circulation thru the cooker.
Bought a pack of 3 foil pans from Dollar General. Size is 16.5" long x 11" wide x 3" deep and cost was around $5. Set a foil pan on the lower cooking grate and DID NOT use the water pan. Have cooked 2 slabs of BB's several times and a 6 1/2 lb pork butt once. Ribs and butt turned out excellent. Used the same amount of KB I would have used with the water pan. Foil pan caught all the drippings and temps were very close to what I'd seen with the water pan. If you want to cook with water just pour it in the pan but be careful when lifting out as they are a bit flimsey. Just let the WSM cool completely before removing and support the bottom with your hands.
Plus you can soak the pan in soapy water for a day and the gunk will wash out easily. I have used the same pan for 4 cooks and they held up well.
You can get foil pans in all different sizes but don't know if you can find a size that would work in a 18.5 WSM. I just know the foil pan can't interfere with air circulation thru the cooker.