I had a look there when I first got into the region as it looked to be a great flat water spot. But it is just a huge mud flat with lots of posts and poles all over the place and no water at low tide. It is also a bird sanctury so not too sure if you will be allowed to kite there.
Basically its a no go for kiters as its a protected area.
You really would not want to as there are loads of submerged tree stumps etc.
Lake Connewarre (just off the Bellarine Highway @ Leopold) is a beautiful spot but with very restricted launch site and the wind has to be exactly in the right direction for it to work.