As beautiful as Lana'i is, I think I'd go postal after a month there. Other than the resort, there's pretty much nothing there and the beach isn't all that great (a lot of dirty water from the runoff from the island since it's on the windward side of the channel).
Exactly...nothing around...I'm envisioning a
Mosquito Coast scenario...or perhaps
Heart of Darkness.
The horror, the horror. So, like you said, perhaps I would go crazy as it's been 10 years since I've been there and I mainly remember the beauty of that place.
When stationed in HI (mid 90's), the ship I was on would visit there yearly; great hiking/mountain biking (Munro Trail) and shipwreck beach was pretty cool from what I remember. I think we dove off of there, but it has been a while. A couple of great golf courses as well.
Not a ton of great diving around HI, but the reefs around Lana'i were in great shape. And the Lodge at Koele is off the hook. My wife's real estate office would have a yearly retreat there (a point where prices were soaring in the market). I saw the pics and it looked incredible. The island is the anti-Waikiki/Honolulu IMO.