I have 1 pin only set @ 20 yards.
If an animal come in closer to my laser ranged 20 yards, I hold a little low.
If the animal is out to my 30 yard lane I hold it 2 inches from the top of the back and it falls right in.
I'm not a perfect marksman and go for my average of 0-3 inches @ 20 yards which has not failed me yet, @ 30 I'm around 1-4" average...
Food for thought?