I noticed that someone had a left the top half of a red North Sails mast up in the dunes near the steep stair way (Rowley St). I packed up at around 6:30pm and no other windsurfers were around so I picked it up. Not sure if it was left behind on purpose, but like a true beach comber I grabbed it. If it's yours, just PM me and I will get it back to you.
It was there early on in the day, and I was one of the first out yesty. So probably left there a day or so ago before.
I found a top half of a mast at Narrabeen a few weeks ago. Not sure what brand it is. I guess there is a fair chance that the bottom half of these masts have been broken.