Well, I guess I'm the first one to post anything about Hawaii and I'm from California.

I just got back from Maui today.
Regardless of what it says about not being able to monitor the Maui County LTR Multinet system, it's perfectly possible to do so. You can't monitor it in trunk mode so no TG's but it works fine in FM mode. You need the following frequencies:
866.1000
868.2625
866.7375
867.9625
867.7125
The system is not very busy so most traffic stays on the same frequency for at least a few minutes. Occasionally, you'll get a dead air carrier and have to press the scan button to get the active frequency but I was able to monitor about 95% of the incidents just like a conventional FM system. Since you can't program talk groups, you're stuck listening to the road department and such sometimes but we had flash floods the first day I was there so it was pretty interesting. The police seem to have a pretty laid back attitude. I never heard or witnessed a traffic stop in the whole eight days I was there.
The Kahalui Airport is policed completely by armed, private security. The PD only responds if there's a problem. They are on 453.325 and 463.95.
Haleakula National Park rangers are on 169.550 and busy in the morning when everyone comes up to watch the sunrise.
There are many hotels with private security as well and the marine band can be quite active at times. I have a P96 file for Maui so PM me if you'd like to have it.