I'd launch at the spur groyne past Marlston Hill. See if you can set up two rods whilst trolling as theres heaps of herring around and some noises about Salmon too. Halco twisty for the herring and a Smiling Jack trolled slightly fuerther behind should do the trick.

Thanks Perry, I think that might be the go-er. At least then I'm maximising my fishing time rather than driving. I didn't even think of launching from there for some reason, I guess because I've never had much luck off bunbury before, so I usually go off the beach either at forrest or up at buffalo. Having a look at google maps, I Might even head out a big further off of Koombana bay and see if I can find a bit of structure to fish off.