have you got a camp ground in mind?
i stayed at Blue Lagoon, was a nice little area, a bit of a walk to the lagoon itself, but worth it for a nice refreshing swim. the camp ground has toilets close, as well as cold showers.
fishing is good, the light house view is great.
just check the link below for conditions etc...
On low tide, you can do a full trip around the island, also the gutter bar at the southern end is a nice place for a feed and beer.http://www.derm.qld.gov.au/parks/moreto ... index.html