Dual Zone Question

On my rec tec mini, I didn't worry about a dual zone for low and slow like I would with my weber kettle. With the 640 I was wondering if it's best practice to push the damper in as far as necessary to provide an area as large as the meat you are cooking.
I read the "Variable Damper Best Practices" doc Herb posted, and from what I gather I can just set the temp and let the cooker do it's thing, but thought I'd run this question by the group.
Thanks in advance!
I read the "Variable Damper Best Practices" doc Herb posted, and from what I gather I can just set the temp and let the cooker do it's thing, but thought I'd run this question by the group.
Thanks in advance!