regarding lights:
if youre night fishing, stay away from white lights!!!! they actract bugs like all get out, and they will quickly destroy your natural night vision. Cones in your eyes adjust to color very fast, about a minute, where as the rods, which adjust to darker things adjust much slower. it takes about 45 minutes to develop good night vision. if you are going to use a light, make sure it is red or green, as these colors have shorter wavelengths and will not attract bugs or destroy your natural night vision.
another science lesson from Professor Saavedra