Beach camping/fishing north of Bundaberg

I don't see why not. That beach is coarse brown sand though, so I'd recommend extra low pressures for towing on it (12 -15 to start with). There's a bit of camber on it too - just something to be aware of, not worried about.

There is a better place closer to Bundy called Norval Park. You turn off the Bundy-1770 road to Yandaran about 1.5 k in go across the railway line and turn left, travel 13 Ks and there is Norval Park. You can pay to stay in the camp ground our drive up behind the dunes and camp for nothing.
You can travel up behind the dunes and end up at the mouth of the Kolan river, you might get a few scratches and you will need a 4WD, that is to the south. Going north along the beach at 1.8Ks there is another creek. You can drive south along the beach as well but there is a big gutter which I was hesitant to cross. Fishing was good when we there in December, but not to good last month, probably as the tides were quite big. There is a pub and store in Yandaran where you can get bait and a tide time table.
We will be back there the second week of the Sept school hols.

Thanks all of you. As we are looking for white (or white-ish) sand, and we will be only one vehicle, Mouth of Baffle is not looking good. What I am looking for is the same type of camping as Cooloola beach or Beach camping on Fraser, only warmer! :-)