Just wanted to say that I was shooting today and remembered this thread for some reason. I usually group 2-3" at 20 yards so I don' t really feel like accuracy is a big problem for me...........but I was curious so what the heck right??
I shot 21 arrows (groups of 3) and only 3 arrows were not touching shafts [

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Nothing but dead center in the X-ring of my McKenzie.
I have always been pleased with my shooting but WOW I was impressed with the results. I will definately try this for a couple weeks and see if it was just beginners luck. I think it really helped me hold steadier. I don' t really miss left or right when I make a bad shot.........usually high or low.
It felt very steady and very comfortable.
Thanks for the tip.