I hunted the big island a couple years ago. Shot a pig.
Don’s advice about putting in for your license early is key to being able to hunt. You may also want to get a 4-wheel drive vehicle. The roads on the public lands on the big island can’t be accessed without it. I expect that’s the same on the other islands.
The lava fields tear up boots bad.
The Natural Resources folks are getting real serious about eradicating all the non native species on the islands. So you may have a hard time finding something to shoot at, aside from pigs.
Have fun!!!! Chasing goats is a blast.