when I went I tried everything to hunt hogs but it just didn't pan out,,, there are a couple guys on the widow forums who are from hawaii that hunt goats and hogs but it was tough just staying in touch with them to get everything scheduled, you may have better luck though if you can register over there..
if you fly fish they have the biggest bonefish in the world there,, right outside pearl harbor on the flats just don't accidently step in one of the japanese bomb craters where the turtles hide.