Holding a tiller And a spotlight at the same time is a pain. I want to rig up a small light bar for solo hunts. Question is, how long will a small 8-12 inch led bar last on a fully charged boat battery. The only thing the battery will be for is my bilge pump, red/green and white lights and the light bar. I'll only need it for the run to my spot in the dark, which won't be too far. Or does anyone have a better light suggestion.