I became a hermit for eight months, studied from 3.30pm to 9.00pm everyday, during my free periods, all throughout the holidays and right up until my last exam. Saying that, it was definately worth it!
I got 93.15. I'm happy cos I thought I totally ruined my chances in the HSC of even getting over 70. Seriously, how many people walked out of an exam thinking "I totally fucked that,"? I know I did for every one!
BTW Lazseeker predicted a UAI of 93.5. Pretty close.