Have you been to foul bay and cosy corner? Foul bay is the next bay down, and cosy corner down from that again.
Despite the name, foul bay is stunning, and during holiday season is generally quieter than hamelin bay. Great for swimming.

Cosy corner has got some nice reefs and is great for fishing (and if you don't care about the ranger it's good for camping too).

The sand down there is awesome to walk on, it's like marbled with black sand and quartz or some shit. It's hard compacted sand, so you don't sink when you walk on it, but it's incredibly soft when you pick it up.