In that wind direction either the sailing club, but as it is National Park you are meant to pay to park there, or further down the Lakes Way at Tiona Boatshed.
Not sure about wave spots, but possibly on Tuncurry side or out at Black Head.
repsonded to your post in the wvesailing forum about the same. Link below to save me cutting and pasting
www.seabreeze.com.au/forums/Windsurfing/Wave-sailing/Wave-sailing-Spots-near-Forster-for-weekend-foreca/