Voyage to a place untouched by time on our exclusive Niihau & Napali Coast Boat Tour. Snorkel a remote & pristine reef at Lehua Crater. Best Kauai Boat Tour. f you’re looking for the biggest, baddest, longest, strongest, wettest, and wildest of all Kauai boat tours, look no further than Holo Holo Charters’ Niihau + Napali Super Tour. This is