Hi,
I'm in Cambewarra and have just started kitesurfing. Dr Surf has a website
www.machelp.com.au/drsurf.htmlHis contact details are on there, his name is Dave and I have seen him several times on Collingwood beach.
Most kite surfers there (Vincentia) are super friendly, it's looking good boxing day / 27th. Keep an eye on the wind charts and when they are at NE 15knots+ you will find plenty people there.
I have not bought gear from him but understand he gives free lessons if you buy from him.
Hope this helps...
Colin