I'm trying to keep my jon boat simple, so don't really want to install a NMEA network just to use a Point 1 antenna, but I like to fish open water and the spinning map drives me crazy when trying to hold on a spot. I have an HDS 7 Gen 2 touch on the back that I connect to an HDS 12 Gen 3 up front via ethernet. My question, do you still need the Point 1 on the newer Lowrance units that are out?