I am unfamiliar with the unit, but a great resource to use alongside googlemaps is the Colorado hunting atlas.
It's got some good overlays, winter and summer ranges, and migration corridors as well.
I use it and googlemaps because sometimes googlemaps has pics from a different season than the hunting atlas. For instance, the unit I spend most of my time in, google maps has winter shots, and the hunting atlas is summertime shots. Nice contrast.
This is a good thread with a lot of useful information
http://www.huntingnet.com/forum/big-...ting-tips.html
I wish I could help more, Still learning myself.