Ko Yao Yai
As with Ko Yao Noi the must efficient way to get from the Chonglad Pier to any accommodation is to make use of the ute tuk-tuk's that will be waiting your arrival. As Ko Yao Yai is larger than Ko Yao Noi there is no exact charge but anything over 150B is usually too much.
Once at your accommodation most larger resorts will have motorcycles or bicycles for rent. Due to the terrain on Ko Yao Yai it may be wise to hire a automatic scooter for travelling longer distances meaning > 10km and having bicycles for use when travelling in a close proximity.
You can also walk along the roads and either flag down a ute taxi or try to get a lift from the locals. Ko Yao Yai, like Ko Yao Noi is a very safe island and vehicles rarely travel above 15 km/h, so hitch-hiking is not exactly a dangerous pursuit here.
Ko Yao Noi
Ko Yao Noi covers about 50 square kilometres. Upon arrival at Manok Pier there is no accommodation available within walking distance. There will generally be between ten and twenty ute-style tuk-tuk's waiting to take you to accommodation. The going rate on the island is 85B.
Ko Yao Noi has approximately 18 km of concrete and dirt road around it. Thee main road is a two-lane concrete road that performs a ring around the entire perimeter of the island excluding the most Northern parts - there are only dirt roads in this area of the island. There are several interior roads that are a combination of either sand/dirt or concrete.
The most efficient way to get around the island is to hire a scooter. The island offer scooters for rent for 200/300B per day. No licence is generally required and helmets are provided. Just walk into the restaurant/reception. You will see the various scooters lined up out the front of the hotel.
Otherwise, tuk-tuk's are available to give you lifts across the island. Simply flag one of these vehicles down as they drive past. Failing that, if you simply wait most locals will be happy to give you a lift - however, it may mean squishing onto a scooter that already has three Thai adults and a baby on it!
Bicycles are also an excellent mode of transport and the main circle road around the island only has one large hill that must be navigated. The relevant flat terrain makes it perfect for leisurely rides. Bicycles can be hired from Sabai Corner Bungalows or any accommodation you may choose to stay at.