I got my 18.5" WSM about a month and a half ago. Have used it almost every single weekend since then, always with water. The one time I tried to cook without water, the temp kept going straight to 300 and I just filled the thing up with water to get it back under control. I assume my mistake was leaving the bottom vents open too much when the cooker was still warming up, as it doesn't take as long to get hot without water in the bowl like I was used to. Do you guys have any other tips for running the WSM without water? Think I'm going to try again this weekend, I'm still going to leave the bowl in wrapped with tin foil just to keep drippings off the coals.