Howdy, I normally shoot off the hand, so I'll add my two cents. Hand placement becomes automatic. I can't say how much practice it takes, but it happens. Of course by the time it becomes instinctive there will be a wear mark on your bow, so that may be part of it. You can add a maker's mark at the arrow pass, or add an insert. ( As an aside, I point out the the dadoe for the insert removes far more wood than years of wear could.) Handle shape may also influence consistent hand placement. A handle wrap gives a good visual and tactile feedback to aid hand placement. A more shapely grip with a "pistol grip" will guide the hand to the same place time after time. I often add a nocking point to the string, but unless you shoot three fingers under, the mark need be nothing more than a very thin wrap of bright thread. ie. a visual mark and not a thickened bead. Ron