A deer vitals are about 8 - 9 inches top to bottom.
Assuming a 350 grain arrow at 280 fps.
If a deers vitals are 9 inches top to bottom. I would use a +or- 3 inch aiming point to give yourself a little error room.

Sight in your single pin at 23 yards and this will put your arrow 3" high at 12 yards, zero at 23 yards and 3" low at 28 yards.


If you sighted in your pin to be zero at 30 yards then you would be over 5 inches high at 16 yards and 5 inches low at 36 yards. Too much adjusting and too easy to screw it up IMO.