Today I did my second whole chicken on my ECB with mods. I had a tough time getting the heat up to 250 in the smoker. After digging around the Forum I decided I needed less water in the water pan. I filed it half way then i lowered it to quarter full. Still kept leveling off at 200, not a bad temp but not enough to get the chicken to 180. I let the level get down to about an inch or less. Had to keep an eye on the temp, when the pan ran dry it would shoot over 300 I would just add boiled water. I also kept adding charcoal about every 30-40 minutes.
I need to find a good grate to raise the charcoal to separate from the ash. I had Iron Lodge Trivets that I tried it helped but not enough. I also added some holes to the top for vent. I need to develop a better vent system.
It all worked well