Tav said..
I will be going to Yarra bay tomorrow, pm me if you want to discuss a time. If you do go there I suggest that you park closer to cemetery, can be big wind shadows next to the sailing club.
Re wind shadow, do you mean because of the Port Botany seawall ?
What about the beach next to Yarra; Frenchman's bay, is it kitesurfable despite a few boats on moorings (wind is clear of the seawall in SW/Westerlies).