Jonathon,
Check your state regulations, because some states require lights for all craft running at night. I have gotten tickets before having a great time on a full moon lit night.
Night sailing is usually a lot better than in the day, because the wind stedies out, and there is little power boat traffic wake to deal with. Go to the local craft store, Oriental Trading Co, etc and by a box of red and one of green Calumet light sticks. (The snap and glow sticks) There only a couple of cents each, and last about 5-6 hours. Just use a small piece of duct tape on the bridal and your off. Unless its realy bright out, I would also use the flash light up the sail, just to keep the drunks from running over you when your in a compromising position with your spousal equivalent.
Enjoy
Matt