Basically, while my club may change, the relative relationships of the club to my body don't - that is to say, I let the flying wedges be my guide.
My setup procedure involves setting up the wedges in a way that I KNOW that to hit a good shot, my wedges are in place.
See the "setting up for compression" post in the drills section, (link in my signature)
Part of that setup process is to use PP#4, and balance, as my reference points for how far to stand from the ball.
I've set my wedges, I set PP#4, I step in to the shot and, keeping those in place, I find my balance.
Sounds like a lot but it really is easy to do, and to build into your routine.
It is also very, very helpful to setting ball position, because you have set your impact alignments, and let your balance assure you've got those wedges AND good balance at the proper moment.
Most people fight balance because they have bad alignments.
Gotta love the flying wedges!
Do you set your wedges on an the inclined or horizontal plane?