Nub, that' s the first thought that jumped to my mind, but you have to know the forumla to make sure the line gaps are correct. Or have the time to go work it out on your own, if you knew the average top of back to bottom of brisket measurement of deer in your area. The advantage of this concept is it helps you make sure you PICK the right pin on a multi pin set up.

98Redline, I shoot with both eyes open, always, so depth perception is never a problem. They say their average and testing accounts for the differences in deer sizes you state.