I've done it a few times, never got into it with my busy schedule at the time. I enjoyed it, it's fairly nerdy to do
, but if you have a family/kids, then it's a good activity.
I did it with the regular Garmin Etrex and had no problems. I like using the simpler model since it makes it more of a challenge. I basically use it to get into the right area and then search on foot for it.