Turn your boat lights on.
Last year I thought I would try those rechargeable driveway marker lights. Bingo!
They work great. I think I got them for $1-2 a piece at Fleet Farm or Target.
I have the flush mount rod holder mounts in the gunnels and the lights fit perfectly in the holes.
So if you are within 200 feet of shoreline you don't need your lights on?
All Vessels When Not Underway
All vessels are required to display a white light visible in all directions whenever they are moored, anchored, or drifting outside a designated mooring area or more than 200 feet from shore between sunset and sunrise.