Hi Carl,
What Tablet are you running? We have a Samsung Tab 2 with the BackCountry and it works great!.
As far as map, it is about preference, just check them all out, zoom in and see if its something you think will work for you out there. You could even try out some local to you driving around to see what you like.
Yukon and I will be running, Accuterra Single Layer Topo for Snoball. but I've used different ones for other runs, including the Forest Service Road maps, Cal topo and even a topo imagary one.
To save the maps for when there is no wifi, you need to download it. Once you've chosen a map you should press "select areas for download" you will use your finger to trace the areas you need. This can be a pain, because you can't really just zoom out and select everything. For the best results, I zoom into like 11 or 12 depending on the map and select a portion, then hit the scroll button and select more, until I've covered the whole route with what I need... its time consuming but I find it gives me the best results... once I'm done selecting, I zoom in really far 18, 19 ish. Granted I don't have a ton off the route, but I do have the route up to an excellent zoom. In my experience, if you select too much you might have problems downloading or with space.
To test to make sure you saved it and that it looks good all we do is turn our wi-fi off since our Tab is not on a phone plan or anything.
Good luck and let me know if you have any questions or problems.
Nicole
---------- Post added at 06:39 PM ---------- Previous post was at 06:36 PM ----------
If your tablet has a stand alone GPS you will be fine. We were perfect in SD, Havoc, ect....