Hong is my favorite island in Krabi, together with her “sisters” Lao Ladin and Pakbia. The best way to enjoy Hong is to rent a private long tailed boat in Koh Kwang beach ( Klong Muang)go there early -from 7:30 onwards- and stay until the Marine park closes at around 16:30. you’ll have the beach all for yourself before 9:30 and after 3 pm. The beach is awesome and there is some snorkeling near the left side wall , at the end of the beach. the lagoon is amazing too.