I am trying to make my rig a little cleaner. First is the wireing. I run a HB 587, a Minn Kota 12v 70 pdv2, 2 digitroll2 riggers and a troll master. Off of a set of batteries in the bow with no charging system currently I just switch batteries when 1 goes low but I need to reste the riggers when do. If I run a parallel system how will this affect my run time? How do I charge a parallel system? I saw a skimatic that showed red on one BATT and Black obn the other. Is this correct. Also I rarley ever change Batteries on the water when I not using the trolling motor. So should I just leave it be and keep a seperate fully charged BAttery for a back up? Thanks Steve