I think I have heard of guys taping small drop charts inside the flip up scope covers. They can look up and see the chart without loosing their cheekweld. I haven't tried it so I don't know how much you can make fit in that small area. Maybe give it a try.
Genises 27-3: Now therefore take, I pray thee, thy weapons, thy quiver and thy bow, and go out to the field, and take me some venison...