Bookings recommended. see http://www.lakestclairlodge.com.au/about-lake-st-clair/lake-st-clair-ferry/ There is a radio to contact the ferry operator at Narcissus Hut.
For reservations, visit http://www.lakestclairlodge.com.au/about-lake-st-clair/lake-st-clair-ferry/. You can reach the ferry operator at Narcissus Hut by radio.