(Iver @ Feb. 19 2012,11:30)
Ahh, thank you. My confusion as I use the Minion Method
I can get a 10-11 hour smoke out of a standard Webber kettle this way. I place smoking wood strategically in the charcoal bed so that I achieve a continued smoke. I monitor temps and adjust the airflow so rarely (sometimes never) open up the lid.
Thanks for the additional info.
I love the Minion method. It is, simply, flawless in a Weber Smokey Mountain. I get 225 degrees for about ten hours.