I hunted the first week of archery season in 2009 in the Oglala Natl. Grassland north of Crawford. There were a few other hunters around, but not many. I have no idea about the time period you are wanting to go, but would guess you might have it fairly well to yourself, and also I think your timing would be better if you were trying to time the rutting activity. It is a pretty expansive area, so you should have no trouble finding animals away from whatever other hunter you might run into. I will be going back in 2012. Feel free to PM me if you'd like and I'll share whatever I can to help out. Good luck and look forward to hearing your report and stories!