One of the habits that we all need to break is using our waist to move us across a bank of targets. Instinct tends to make us want to turn at the waist, but this will give us inconsistent results as this causes our grip to change on our guns. This will change your sight picture, and will give you inconsistent results.
With a proper stance, center yourself on the targets and pivot at the knees. This will make you faster and will improve your ability to get on targets and hit the targets consistently. This also keeps your rifle and shotgun from walking off your shoulder as you move through the target array. Like all skills we are discussing, this takes practice as you develop good habits and break the ones that are instinct.
This following video will demonstrate the concepts we are referring to.