Thanks yet again for all of the helpful advice. The Google Earth idea is a good one (thanks VICTORY402). Since we live near Sacramento, CA, most of our camping will be in the Sierras. We would like to visit Bryce and Zion Canyons in Utah soon, as well. Since our TT is small (16'), we should be able to use a good variety of sites. The 10gal. black water tank will limit the amount of time between dump stations. I'll look into that Barker Tote, but even at an extra 10gal. of waste water we're looking at trying to manhandle 80lbs. I can carry extra water and propane in my truck, so the waste water is my only concern for extended boondocking.
Sorry to ramble on but I've got lots to learn.
Kim