Living in hawaii this summer

I'm going to hawaii from the end of june, to end of july. Looking for the cheapest surfer bum place to live.
Things I have in mind:
-Renting a cheap ass appartement from some students who're out of town for the summer.
-Buying (or borrowing) a shitty but large car, parking it on diamond head camping/similar and selling it when I go home.
-Living in a tent, in som guys garden. Paying a little $ for it.
-some cheap motel / bungalow etc.
You guys have some hot tips here? Help me out
What should I expect to pay, and where is it cheap to live? I dont mind if its a shithole. I can have loads of fun everywhere!
-Victor
Things I have in mind:
-Renting a cheap ass appartement from some students who're out of town for the summer.
-Buying (or borrowing) a shitty but large car, parking it on diamond head camping/similar and selling it when I go home.
-Living in a tent, in som guys garden. Paying a little $ for it.
-some cheap motel / bungalow etc.
You guys have some hot tips here? Help me out

What should I expect to pay, and where is it cheap to live? I dont mind if its a shithole. I can have loads of fun everywhere!
-Victor