LED fog lights e bay some simple thinking on mounting brackets some wire a switch and a small 12 volt battery from radio shack . LED are low voltage so should not draw much on battery or go full size battery better option. I am going LED on my 22' for back and side lighting and even LED black lights.
Had a friend weld the bracket at the angle I needed.......then mounted to the boat. I wired it directly to my 12 volt battery and put a switch inline........should work for you about the same with some modifications for your own boat.........