All those boulders have problems on them, I can't think of a line that hasn't been cimbed to be honest, including all the overhanging crack/pocket lines. There is also a heap of bouldering on the eastern end of the beach with all obvious (and non-obvious lines) being climbed and also back at the western end of Tidal River (boat "ramp" end). There are a few secret spots that have quality steep problems between Squeaky and Picnic (follow your nose). Some good lines can be found at Whiskey Bay and all the obvious lines at Darby have also been climbed - there's a cracker of a highball there too! People have done stuff out between Sealers and the Lighhouse too (check Neil's blog) but is a bloody long way to walk for a bouldering session.
Writing them up any further than the descriptions in the eastern Vic guidebook would reduce the "nobody's ever climbed this before" feel I reckon :-)