If I were to do it again, I'd go right back to Chadron and bowhunt early IF the weather cooperated, then run up to Hill City S.D and catch the opener there. Early is a gamble but chances are they will still be in their wintering areas. When you find them, you will be in a target rich environment. My oldest girl who was 9 at the time and I did this a couple years ago and were very successful.