If you really want to enjoy your Hawaii Vacations, ensure to go for renting a car. In Hawaii, except Honolulu (Oahu), public transport system is virtually non-existent. (Remember, Honolulu boasts of having one of the best public transport systems in the US). But to roam around freely, it is advised that you should prefer to go for car rental even in Honolulu because due to cut throat competition, car rentals in Hawaii are claimed to be cheapest in the entire world.

In addition to non availability of bus service in other islands of Hawaii, the taxi service is quite expensive. More over renting a car in Hawaii will help you to be your own master as far as surfing of various islands of Hawaiian archipelago is concerned.

Motor bikes can be another option for moving around along the southern coastlines, but this option becomes practically useless for other parts of the island, especially where you intend to cover long distances. Bikes will also not do in rain storms and you can expect to encounter rains anywhere and anytime. So, to enjoy your Hawaii Travel, you must opt for renting a car. Of course, to enjoy thrill, you can rent a bike on a sunny day.

So the best option remains: Renting a car.