I added these LED docking lights over the winter because I occasionally return to our mooring on cloudy or moonless nights, and get too much deck glare from handheld or deck lights. Surface mount, so only 3 small holes (2 mounting screws and one wire).

These lights cast light ahead and to the sides without deck glare, being below the hull-deck joint. They're not too bright and only light up the nearby area, but help visibility for close maneuvering when anchoring, docking or picking up a mooring at night. A worthwhile addition, and inexpensive.