hi there I was over to Kauai last May The Island did not offer much for flats fishing BUT the mouth of the honalay river has BIG JACK CRAVAL! I had an 8 weight with me and I needed a 12 I hook 2 that spooled me like a mack truck! I landed some about 8-10 pounds 1 of the locals there (we rented sea kyaks from him) says they get them up to 40 pounds there. The mouth of the river is where they filmed South Pacfic Clausers and decivers worked best. I did get one keeper.
I brought home a wife. lol have fun

Rich