I have a good example about lights after dark. If anyone on this board fishes Herrington after dark then you use some sort of light after dark at some point in the year. The lake can be clean as a babys bottom during the day but when the traffic slows down at night most bends clog up with ALOT of floters this is very true in the late spring/early summer when the lake rises. One night at Herrington my uncle and I were runnung back to the dock not going that fast at all when all of the sudden WHACK!! We struck a large drum that was floating half under the water. If we had our lights on we would have seen it but we didnt since we were im eyesight of the launch and thought we "knew the lake like the back of our hand". Point being if I have to use my lights to navigate at night I will every time. If I have another boat approaching then I flick them off. They are not that bad if you use common sense with them. I have seen too many bad pictures where someone strikes something with their lower unit and it destroys their motor or busts the hull like an egg.