There's not a lot of flat water spots...loads of top class waves though...you can head up to Corronation which has a flatish area...but its still quite choppy when its really windy.
Personally I'd ditch the twinny and get a surf board you'll have loads more fun.

Also as you have may heard the waters are complely shark infested at the moment, millions of the things everywere, so i'd bring a chainmail wet suit and a shotgun!!!