If you are planning on buying a BLM or NF map anyway, for a few bucks more you can buy one of Erwin's maps. They give you a jump start on your scouting by showing you unit boundaries, historically productive areas within the unit to hunt, migration routes, etc. In the past I have used them and found them very helpful. With the advent of GE, OnX maps, and the like, I don't use paper maps as much as I used to, but still consider his maps a useful tool...
Horniac