Koh Mak, This is a large island to the south of Ko Chang that is blessed with several beautiful bays and beaches and coral reefs nearby that are still in perfect condition. The islanders make their living by growing rubber and coconut trees. The best time to visit is from November until late April. There are a number of accommodations and tourist facilities available. A passenger boat departs Laem Ngob daily at 3.00 p.m. and returns from Ko Mak at 7.00 a.m., traveling time is 3.5 hours.