What state will you be hunting in. Get a map of the area .Either pull an aerial map off the satellite server or go to your county court house and see if they have a topagraphical one. This wil show swamps, ridges ,borders of pastures etc. The different states make a big difference. I've hunted Maryland and the past 3 years Florida. What a huge difference. There's enough imformation on all of these post if you will read them. I just read 3 deer hunting books and found this site better than the books.
God Bless you,
PS a little prayer goes along way too
Chuck