Moz,
I was out on Friday, Sat & Sunday, although only sailed round to the main beach from Lammermoor Fri and sunday. What board / sail were you on?
If you're thinking of Corio give Andrew Fee a call on 0413565430. He's our local gun who regularly sails up there.
Also you may want to adjust the wind speed for friday down a little - whilst BOM max gust read 25kn, average was only approx 17kn. It does seem windier than BOM readings for SE at times though.
BTW - the colour of the water is "Yeppoon Blue" (you can mix up some of your own if you have a tin of milo and some milk)