Just want to set the thing on the front deck pointed at the bank while trolling along, seeing brush and such. Something like a big wide flashlight on a heavy base. Anybody do this? Does it help or does it ruin night vision everywhere else. What is the best color? I think the rub rail lights look cool, but really don't want to mess with mine. i have never even been on a boat with the rail lights installed so just fill me in. Do they work? I have enough wires in my boat.