Hey Glynn, heres a map of the top carpark and sailing area at Kyeemagh (ignore the freerace area labels). You can only access it coming from the north - if coming from the south (ie Yowie Bay), go just over the Cooks river, then take the exit to the left called "Kyeemagh Avenue" / Loop Road - it loops around to the left under the bridge, then lets you join the main road heading south.
Today looks good!