I am not a big fan of headlights on duck boats. They ruin night vision both yours and any other boats you may be running towards. I ran duck boats for many years on the Susquehanna river and in MD and NJ in salt water and had big boats on the Chesapeake bay. In my duck boats I never used anything but a small flashlight and only when I needed it and sometimes I use a spotlight on the roof of my MY to find day markers if it was a moonless night. There is nothing worse than running along on the water at night with your night vision working and then have someone shine a light in your eyes. Running lights of course are a necessity both to be in compliance with the law and to let others know you are there and which direction you are running and the red and green lights do shine in anyone's eyes.