+1 You can also link a photo and/or the snapshot to the waypoint stored in Google Earth or you can also do that in MS Excel. I think if you use Humviewer, it allows you to mark a waypoint and also make a snapshot. I have a spare power cord and ac/dc adapter that I can use to power up the FF and play back recordings or view snapshots at home off the boat so I seldom use Humviewer.