We had an excellent experience with Kona Honu Divers. Others are likely just as good. Boat size is not as big a thing on this dive as others. More than one boat will be at the site, and divers from all boats congregate. While that sounds like a drag, a couple of dozen divers ( or more) in a large circle with dive lights shining toward the surface attracts the food source for the mantas and the mantas, and the "bubble aquarium" formed by the bubbles and light creates a beautiful scene. It is fantastic experience. Have a great time.
DivemasterDennis
DivemasterDennis