Worse than goatboating!

Yes, it can be if you surf at crowded beaches.

However you can explore places where it is too choppy for SUPs to go. One such place is around the point at Long Reef on Sydney's northern beaches. There is a fun little wave that breaks between two rocks. It looks like a close-out but because the whitewater backs off the top of the swell after it breaks you can drive across the wall in either directions (away from the closest rock).

Still, goatboats do that too..