Geoff Wong's Pilot Locator page is essential for seeing where pilots are ... particularly for retrieve drivers. It shows a list of pilots who have their trackers switched on. The Links column of the table contains important info. SPOT or GARMIN links to that pilot's tracker page. If it is a Garmin, the altitude is shown which is really helpful for the retrieve drive to know if the pilot is landing soon. The TXT link shows more detail of the track points including how far the pilot has moved. The Goog link shows the pilot's last position on Google Maps. Note that there can be up to a 20 minute delay in a track point appearing on the page.