I've sailed there a lot in the last couple of years and never had to raise the boards for any seaweed at all. I don't think kelp could grow there but after a big storm it could potentially wash in from out to sea. Maybe in winter or late April it could be an issue. The red X does mark the spot. Book early for Lynnies just a stagger to your room or tent, not that the caravan park is that far. If you want luxury accomodation theres some nice rooms in Beachport just a bit of a drive each day.