$25 (equipment included). Our own kayaks are welcome, but I think we're still charged the fee.
Nevertheless, details on how to register are here:
Details (cut-n-pasted from the link above):
Skill level: open to alll
prerequisite: Basic skills and comfort in a canoe or kayak
Bring a flashlight or headlamp.
Paddling "by the light of the silvery moon" is a magical experience. We'll paddle away before dark and enjoy dusk and darkness on the water.
Canoes and kayaks are welcome. Equipment is included in the tuition fee.
Note: To comply with WI State Boating Law, each canoe or kayak must carry a white lantern or flashlight that is strong enough so that other boats can see it at a distance. The light must be displayed in sufficient time to avoid a collision with another boat.