I'm not going to say I fully understand the method or have done it, but from what I understand it is something that was done on bows with rather spongy walls and larger valleys. It assured that you had the same tune everywhere in the valley incase you missed your anchor point a little or crepped forward during the shot sequence.

I don't see where there would be a need for it with any of the newer bows, even a two cam. They have such solid walls and small valleys, if you were to creep forward it would ruin your form and shot any way. And if you use proper backtension during the shot with the correct draw length creeping shouldn't be a problem.

I may not have a full grasp on this tuning method though and could be all wet. I think people must still do it because I see it talked about on AT sometimes. I would be hesitant to tune for a form problem though. I would think it would be better to fix the problem in your shooting, not to try and tune it out of the equipment. In essences it just makes your bow more forgiving of errors in the long run.

Paul