as far as areas go, not too sure about Ballina, but anywhere that there is a sand flat covered at high tide or a shallow creek will get all the poddies you want, if you are after small ones, a plastic trap will get them, the ones about 5 inches in diamter and the ends come off, or a home made one from a clear plastic cordial bottle, the larger flatish ones are best, with a small X cut in the side, then pushed open to make a sort of entrance with pointed sides, put a couple of rocks in to keep it on the bottom, a couple of bits of bread and hey presto, mullet trap for free.