Koh Hong is probably the best known island and the most proposed in boat excursions from Krabi or Ao Nang. You can relax, swim and climb to the new viewpoint. In general, the excursions offered by the agencies take you to Koh Hong and at least to Koh Lao Lading and Koh Pak Bia for a day or half-day tour. All three stops feel like you just stop in paradise!