...one more thing, head off early, as the angle of the NE wind changes as the day progresses. Keep an eye out for white caps right out in the bay when the NE starts to pick up. The angle should be right to head off the end of the runway and aim for the point. As the wind picks up, you'll need to head for the wharf / ship. If it gets too late/strong, the wind angle will ne too far from the north, and you'll have a hell of a time getting back.
Here's some tracks that I did earlier, where I did some Kurnell runs early in the day as the wind was picking up. You can see the wind angle changing each time I went over and ended up further to the east.