Contrary to what someone said earlier, speed has alot to do with not needing a pin for close distance. With the added speed of todays bows the arc of the arrow isnt near as much as compared to bows of say twenty years ago. Take an old compound bow say a browning nomad shooting a 500 grain arrow. Im not sure of the exact speed but should be around about 180fps give or take. With that bow shooting at a 10 yard target with your 20 yard pin I garentee you will hit at least a few inches high. Now flash forward to the present. Take a Bowtech allegiance shooting a 350 grain arrow at 315fps, you can have a pin sighted dead on at 35 yards and there wont be but maybe an inch or two at the most difference in impact at ten yards using that pin.