I've been to Kauai the last three summers, and I've seen several cats on the beach in Hanalei Bay and in front of Duke's at Nawiliwili, but none on the water. Bigger boats, yes, and kite sailors; but not beachcats or day-sailors. By the way, does anyone know the story on the giant trimaran in Nawiliwili Harbor? You can even see it on Google Earth.