New Feature: GPS Ice Hole Marking.
Record and save all the ice holes you fish directly onto a map with the GPS Ice Hole Marking feature. For each new location you fish, a new spot will be marked on your map. Any data your Deeper picks up at that location will also be stored. So, you’ll end up with a detailed record of every hole you fished, which you can use again next time you are fishing that site (the map is available offline). The Smart Sonar Pro+ will use its internal GPS for this feature. For the Fishfinder 3.0 and Smart Sonar Pro the app uses your phone’s GPS, so make sure your phone is as close as possible to the hole you’re fishing when you first put the Deeper in; after a couple of seconds your location will be marked and you can move your phone away.