Not fished that far up, recollection of driving round the entire coast years ago is that there are a lit of unfishable cliffs on the north coast, bait is hard to come by, you might have to improvise with supermarket fish,
They are big on the fly up there, ive just got back from a hotel on the banks of the other River Dee at Aberdeen, didnt have a rod with me but much talk of game fishing inthe bar.