Depends what you're after and where you're close to ... probably nice to have a float around at St. Kilda if you've got a big board and are looking for some light wind playing.
Head up into where the kites normally are - it's flatter water and shallower.
Probably not enough to get planing unless you've got some REALLY big sails.... yet.
I tend to find Elwood is a couple of knots less than St. Kilda on a marginal seabreeze, but it'll definitely be worth getting wet at Elwood I reckon. I need another few knots then when the arrows turn green I'll head for St. K (100litre and a 5.7 is my biggest kit).