Most states have a GIS data download site that has the aerial imagery also. The county GIS sites often have it too. You usually don't have to have ArcGIS software to view and manipulate the aerial imagery.
I put glass over it and make notes with paint pencils. Scrape off with razor blade - each year. I use it often for planning, especially wind directions and to keep a history of how often I hunt in certain areas. I also keep track of where other hunters go and frequent. Great to find areas where pressure might be lower. I really like it... my command center.
We did the poster size mytopo.com laminated one. Then mounted it between a piece of plexiglass and a piece of sheet metal. We have all our club stands marked with color coded, peel n stick, hole punch paper and use magnets to mark where each hunter is going that hunt. Also keep a big arrow on a magnet that we set to show wind direction at the time.