Sailing is available on Koh Mak, with two different sizes of Hobie Catamaran and windsurfing boards. available for hire at Cococape Resort, Holiday Beach Resort, Koh Mak Resort, Ao Kao Resort or Baan Koh Mak.
You can also rent a long tail boat trips to get to neighboring islands: Koh Kham, Koh Kradad, Koh Rayang Nok, Koh Pi and Koh Wai.
