Please check out some of these Hawaii resources. We'll be adding more Hawaii resources as time goes by so please check back often.
If you're looking to get your surfing to the next level, I would highly suggest looking at all your options when it comes to surfboards. It's very difficult to find a good deal on a used board that has the perfect dimensions for your ability, size/weight, height, and surfing style. Getting fitted with a custom board will make improving that much easier because your board is fitted to you. It's just like buying a shoe, you normally buy a shoe that fits your foot rather than making your foot fit the shoe. This custom surfboard review guide can also help determine what board to buy if you haven't already decided.
If you're planning to go to Kauai in the near future, these resources will help find a decent Kauai rental house for you and your party.