For me it depends on how often I am fishing at the time. If I am fishing regularly, I usually narrow it down to a couple of productive spots. If it becomes a couple of weeks or months between trips, I will usually try a new mark or one I haven't fished in a while.
I live on the gold coast so our offshore structure is a lot flatter than the bay or outside moreton and different areas of the same reef go on and off.
As far as the closures of the bay go, I can't see a species that would benefit from them.
Jim