I think it depends on your climate. Around here in summer time, my first one hundred degrees are free. I find the water helps me hold a steady temp. Now during wind and cold weather no water seems to work better.
Weber WSM, Weber GA, Weber Spirit S-320
Charbroil Oilless Turkey Fryer
Wife LuzziAnn 1956 model.
Maverick ET-732, Superfast LSU Purple Thermapen