Personally, my experiences with fishing at night for Crappie under a full Moon have produced poor results. My results with a Full Moon while Bass fishing at night have been more productive, but only on banks where the Moon is not visible.
One of the recent KY Afield shows had them wade fishing the Green River, upstream from the lake, and I remember them saying to "not let the light from their headlamps shine down into the water". Here's the video : Kentucky Afield - Walleye Fishing with John Boel