I just joined this site today and don't really have a dog in this hunt but....I use a new site for aerial photography that has much better images than Google earth and they are free. It is called flashearth.com. I used it to locate the walk-in areas in my hunting area that have good deer cover.

I just printed off the county from the walkin book and started looking at the areas using flashearth.com for features of interest to me.