Something else I have been using is www.gpshuntfish.com with an elite membership. It cost $30 for the year, and it is really useful so far in my "scouting". You can bring up bing or google aerial maps, hill-shaded terrain maps, topo maps. You can add POIs to it and then convert these for use in Google Earth or to .gpx files for use on your garmin. Something else I have been doing is using the drawing tools to outline units/ wilderness areas(for wyoming since I can't hunt them) and then converting these to a .kml file (which can be done directly from the website) to be used in google earth. It may not be the exact boundaries, but at least if I am looking at a particular drainage I know what unit it is in and whether or not it is in a wilderness area. There are also tools that mark public land, and forest service roads. Sure I could find the resources to do this probably for free but it sure makes it quick and easy to already have all of that info at your finger tips. For an out-of-stater, I think it is important to know some of these areas by name when you are talking to a game biologist or ranger. Seems like so far I have gotten better information from the biologists in areas where I have taken the time to learn something about the geography.
+1
I think it's tough to beat this site when looking at unit boundaries and public land.