RE: Why shoot 1 pin
The farthest I ever shoot is 30 yards and that is rare. Most of my areas I bow hunt allow for a 20-25 yard shot max... My bow shoots very well up to 30 w/ one pin... less room for error.
They only way I would move up to more pins is if I were going on a bowhunting trip out west for elk or something... or up for caribou...