Rob go to the Iowa Geographic Map Server @ http://ortho.gis.iastate.edu/and zoom into the property with the 2006 orthophotos. Once you have the general lay of the land centered, switch to 24K Topographic Maps. This will show where the hills and valleys are. Then take a walk soon to find the heavily used trails. Once you know where they are travelling, spend a weekend glassing the trails from a safe distance. Now you have an idea where to set your stands. Good Luck.