i have fished up to six people out of my boat at one time, and i always seen to it that each person had submersible light. my experience (and my opinion) has been that the amount of light in the boat or lights shining in the water dont affect the bite. i dont know if the full moon does anything but it seems the bite is slower than on the darker nights. its the plankton that migrates to the light and the minnows that come for the plankton that draws the crappie and other species that feed on minnows in.
listen with your eyes---its the only way to beleive what you hear...