hey bluetroopy, if there's any south in the morning, you can expect a good sea-breeze in summer. I haven't been down there this summer, but I've found that it really picks up mid-arvo and sometimes continues until nearly dark.
Northerly's touch and go, but if there's light northerlys in the morning, you might still get a sea-breeze in the arvo, whereas the metro can be marginal on those days.
does the bluetroopy have a JP sticker... think I saw you down at beachport
edit: check out www.boggylake.org as the other fact sheet is kinda outa date. The boggylake guy should do an update