just starting up a new post for this. You guys may have read about my love of google earth for offroading/mine exploring. That eventually went sour after a few GE updates and a few wrong button pushes leaving me mapless offroad. BackCountry Navagator is a worthy successor.
key points:
-easy to get free, large, Sat or Topo maps for offline/no signal use
-import/export google earth .KMZ or .GPX tracks
-fully optimized multi-touch screen interface
-simple one touch waypoint input (mark something cool you find)
-zoom way in for rock by rock directions or way out for the big picture.
http://www.backcountrynavigator.com/...d-gps-software
the website is cheesy and several versions behind.
Ive been using it for awhile now and it takes a bit of getting used to but It hasnt failed on me in any way yet. You can use a program called MOBAC to get google earth sat maps or ARCsat maps. I actually have the entire SBNF trail system, hammers, cougar buttes, and calico on my phone now. On top of these maps I have all the google earth tracks Ive been collecting for years now.
If you have an android phone and a use for a GPS its a no-brainer at $9 with free maps.