Love this forum , Lots of knowledge. from people willing to share. If I get a new trolling motor with variable speed control and maximiser. Will I automatically get interferance off the trolling motor mount.?....... Maybe someone else thought Structure Scan had to be bought at time of purchasing a Lowrance depthfinder. but can be added later per BPS. ......I have a hand held Garmin GPS and am considering a HB 596c hd di or a Lowrance Elite 5x DSI. I understand Lowrance doesn't have 2d and HB doesn't zoom on DI. Anything else I need to consider. Thanks for any input