Never used them but I can't see why they would not work well, I would also look at cheap led lights from china. I put a set on my mountain bike for under $5 shipped and they work great....
I do not have a pic right now but I mounted my down-riggers on a nice piece of pine the same size as my middle bench and used removable boat seat clamps to hold the setup to my middle bench, I also made wooden ball holders. The setup mounts in 30 seconds and works great with my bigJon clone...