MyFishFinder.com Just like iceshanty but warmer
I charge my battery and disconnect it from the head unit. I charge it again every month or two. Using a float charger is ok, but I won't leave one connected and plugged in because I believe they could be a fire hazard. Maybe it's just me, but I also unplug heating pads when not in use.
disconnect battery from the unit. charge the battery to full charge. Over time, the battery will discharge. check in September and put on charger if needed. store in cool, dry area.
If you have a canoe , kayak or small aluminum boat, bring it along with you. Keep it charged, and use it.