In reply to elefante
It depends on how big the tide is (check the tide tables!). However at a big high tide there's no platform visible.
Alternatively swim to it from the nearest rocks on the left side of the beach facing out, at low tide. If you leave from the nearest point it's a lot closer than going from the beach. It's not too far really if you're a confident swimmer. The only slightly tricky bit is downclimbing the final move by the summit, but I soloed it in teva sandals. There was a bunch of tat so people must abseil it.