Howzit Kyle,
You might want to search "Hawaii DNLR". There you can look under hunting license for info.
Sorry but I no can help you with hunting da Friendly isle as I'm on da Big Island of Hawaii.
I will however echo Soilarch and reccomend a good pair of boots. The lava can be pretty brutal on one's feet. I'm already on my second pair of boots fo da year.
I'm pretty sure that if you do decide to hunt, expect to hunt spot an stalk.(AND) Make sure you bring plenty liquid with you. It can get pretty hot and humid.
You might want to check You Tube under Hawaii archery hunting. Some friends post there. Also search Hawaii goat hunt. This might give you a rough idea of what to expect.
Aloha,
Mark