You can record freely as you go about your day! For best sonar log recording, we suggest you keep your speed under 6 knots, although maximum logging speed may vary depending on which device you are using; perform a grid pattern where the distance between tracks is no more than 50 meters /150 feet; and save about every 30 minutes to reduce any risk of loss.
Make sure your MSD/SD card is inserted into your GPS chartplotter and press HOME.
Tap Nav Data.
Tap Track Point Interval.
Now tap X and start boating (at this point you are recording the trail).
Tap the track name.
Tap & hold the saved track.
Tap Export All Tracks.