I tried Google Earth, but found that it was hard to follow the streams when it ran under cover of trees.
I got Delorme Topo USA software and loaded it on my laptop, added the USB port GPS sensor and have a great topo map that shows all of the streams, trails, terrain and roads. I can look at a certain area in detail, make notes and plan a route to the spots and save them. Put your laptop in your car and turn on the GPS and you can get a turn by turn to get there. Plus if you want to really get into it you can down load any of the notes, routes, etc to one of their small hand held units to take into the field with you.
If you want to take a look at it here is a link. http://shop.delorme.com/OA_HTML/DELi...&section=10050

GJ