A couple of years ago we bought a GPS and tried geocaching and failed miserably, we never found anything. Well I was updating the software on the unit to prepare for our trip to California and there was several updates to the GPS. To my surprise the GPS would crash when I tried to turn it on, after several attempts I finally wiped the GPS and reinstalled all the software and it worked better than it ever had, so to test these new updates we went geocaching. Turns out the GPS was off by about 10 to 15 feet before and that is why we never found the geocaches. But the updates fixed the problem and we were able to find the first one we looked for.
That totally lit a fire under the kids! We had to go out and find 6 more that day. James asked ten to fifteen times everyday after that to go geocaching it was fun and we are looking to do it again.