Videos Lowrance HDS-2 and StructureMap October 26, 2012May 6, 2019 The Next Bite Lowrance Chris Meyer with Lowrance explains how to use the feature StructureMap on the Lowrance HDS Generation 2 units. Other Related Posts: Keith Kavajecz Explains Choosing the Right Mercury Props Casting at Individual Walleyes with Lowrance Active… Use Schaeffers Oil Citrol to Clean Your Boat Use Your Mercury Smart Craft Gauge to Watch Fuel Usage