None of the Humminbird LakeMaster features such as Follow the Contour, depth highlight or shallow water highlight work on the Humminbird Basemap. To use these features, you must insert a LakeMaster or CoastMaster card into your compatible Humminbird fish finder, and the fish finder must be networked to a Minn Kota trolling motor equipped with Advanced GPS or i-Pilot Link.
For high definition lake maps and contours of 1-5', Humminbird LakeMaster cartography continues to provide the most accurate and detailed freshwater mapping available in the U.S.
