The trip was good and bad.
Did not get to spend as much time prospecting as I would have liked to. Also found that the driving directions to claims in the Greaterville area won't get you to the claims. Meticulously following the driving directions in the mining guide got me within a couple of miles of one claim and within a mile of the other one. By talking to a local in the area, I did find where one of the claims was but could not find any claim markers and since I did not want to dig on someone else's claim (there are other claims very near the GPAA claims), didn't do much.
I have found that a handheld gps (or equivalent) is almost an essential tool to find the boundaries of the claims. If you are really good at using topographical maps you could dispense with the gps, but the gps will be much easier and quicker.
I did pretty much locate two claims around Sierra Vista that I am planning a trip to.
Overall, was pleased with the trip even though I did not find any gold (didn't dig much at all). I learned enough to make it worthwhile.