Look at it on Google Earth until you're cross-eyed! Mark off interesting places on your topo such as choke points, water, saddles, areas of cover and the openings and just keep refreshing and studying. Take a few pics of it on Google and mark them also after you print them out. Laminate them or keep them in plastic. Envision your hunt as you'd like to see it play out. It works for me and even if it doesn't go exactly as I had thought it might I am familiar enough with the area to go to plan B,C, or D.