jump off black rock, it's a really fun spot. also, rent a scooter and ride the road to hana! it will take forever and it is indeed sketchy, but it offers some insane views... plus who doesn't like getting a little tipsy and riding a moped around.
hawaii is the shit, can't wait to get back. Also, if you're looking for bud, just head to Whalers Village and ask some of the young locals who work the kiosks, they'll hook you up.