55Zero are now available at Watcon. Rocket Ship Watercraft 55ZERO Sponson's for the Kawasaki JS440, JS550, 550SX. I rode Chris Fischettis 550SX Ski at Body beach in Havasu, and these things work. Greatly improves handling, and stability. A MUST have if you are racing Vintage class. Available from WatCon for 150usd.
