Videos Using StructureMap Overlay for Lowrance Gen. 2 October 26, 2012May 6, 2019 The Next Bite Lowrance Chris Meyer shows us a really neat trick using the StructureMap Overlay option on the Lowrance Gen. 2 HDS. You Gotta See This!! Other Related Posts: Using a Lowrance GPS in a Duck Boat can Really Help… Using your Lowrance to Find Fall Walleye Structure Put your Lowrance Active Target on Trolling Motor Lowrance HDS Unit Basic Set Up #Lowrance #HDS