Does anyone know of a way to hook white lights around a pontoon boat that runs off a 12 volt battery?

I currently am using a green neon, 4' long light that floats straight down in the water for night crappie fishing. It doesn't work as well as white lights. I do have a couple of floating lights bought from Wal-Mart. What I would like is some way to attach or be attachable upon reaching the fishing area white lights around the boat that will be able to run off 12 volt batteries, i.e. car battery or marine battery. Does anyone currently have such a system or have any ideas?