Hana golf is not a thing (UNFORTUNATELY!) Theoretically, it would be an amazing place to play golf. The beautiful rainforests and ocean views as a backdrop. There are two main reasons why there is no golf in Hana. The resorts and the weather.
If there were larger resorts in Hana, it might be possible for someone to see the value of making a golf course here. The backdrop and ocean view potential is phenomenal. Space is there and the course would virtually water itself, but there wouldn’t be enough golfers to make the idea make sense financially.
In addition to the lack of demand, the extreme amount of rain would make it very difficult to maintain the course. Once the ground gets saturated enough the golf balls would begin to crater and the golf carts would tear up the fairways. In addition, during larger weather events, water management would be difficult to keep up with.