Hi Zac,
We have a CAWA trip to Willyabrup on the Australia Day long weekend if you’re interested.
Not much rock around Bunbury, but I have bouldered on the breakwater wall behind the wharf, (some years ago). Can’t direct you to it, (forgotten how, but you can’t miss it. You might have to be a little inventive but you can find problems on it.
Cheers,
Toc.