I was just in Maui and have say go go go to Mama's Fish house in Paia. We were there on Saturday but unfortunately missed lunch. They have a serving break from 2-4:30 in the dining room. However, the appetizer menu was fantastic plus they were serving a special entree (Mahi-Mahi)that was out of this world. We also had the Wonton Shrimp, which were whole shrimp wrapped in a small wonton with a sauce that was very, very good. It is pricy but the food, service and view are all wonderful.
If you like Margarita's at all, try the Maui Margarita...quite good and different.
Jan