In terms of size, it does not seem too big, but it's a hell of a mess.
If you know the northern beaches you would probably recognise the little boat launching bay beside the Golf Club at long reef. South swells hardly ever get in there and it's usually a millpond, not today.
There was even a tinny floating around in the middle with only 3 ft of the bow sticking out of the water.
This is what it looks like from the long reef headland looking towards DY.
This is Longy beach about 1 hour before high tide, I doubt there will be much of it left. If you look closely you can see 4 x morons (commonly known as clubies) heading out in 2 rubber duckys, I assume they would probably say it was for the purpose of practice.
There was a big crowd as DY, even the weather channel were doing a story.
Here's those idiot clubies who launched at Longy, they were outrunning waves at DY. I can't say if it's practice or play, but I do know everyone on the beach was unimpressed and more than one mention the cost to rescue them if it all went bad.