*brushes off her shoulders* Ok, let da local sista talk story fo ya.
As a local girl who is damn proud of her island home, I would never ever suggest removing wildlife - or even a shell or rock - from the islands. But that's mostly superstition on my behalf.
Besides that do NOT take Jackson's home. Please people, don't be silly about it. These guys are all wild and even though they are an introduced species, they are still part of the 'aina and the biodiversity. removing even one could cause such a huge impact. I know it sounds all tree-hugger hippie of me, but seriously. I've seen singular animals destroy entire banyans and I have seen the removal on a certain "pest" bug also destroy the habitat. People don't realize how unbalanced the land is out there and the chams really do help keep a little bit of balance around, which is why you are, technically, not allowed to remove the chams.
However, if you do want to see them, the best bet is to ask da local where you can see the chams. However, if you are a tourist about it, they will give you stink eye and send you somewhere else. Many locals are very protective of the 'aina and if they think you are there to mess it up, they won't help you.
I've seen only two wild Jackson's while living out there (I love in NY now). The first one was up near Tripler Army Hospital. I had a friend who lived on base and while walking around one day, I happened to look up in the tree we were under and lo-and-behold, there was a beautiful male Jackson's, hanging by his tail. The second one was while I was working at Kualoa Ranch, on windward side. I was giving a tour and we were stopped, waiting for the slow people/horses to catch up...and a Jackson's, literally, fell from the sky. Freaked out the Japanese tourist a lot - poor girl was shrieking her head off while her horse sat there munching the grass...lol.
There have been plenty of reports of a windward Oahu colony.
Now, I've driven Hana many times and never saw any chams anywhere around there. I've visited Kauai and did the Kalaulau trail twice and never saw a thing. I've hiked from Kaunakakai to Kalaupapa on Molokai and never saw any there either, although my friend said she saw a few.
If you reallllly wanna see Jackson's, you go to the pet store, ya? You see them for sale for $20!
And someone did mention the guy out windward who sells chams. great guy - i highly recommend him. When I had to leave island for my job, he took in my chams and bred them - Karma's kids are still breeding many babies to this day!