Howdy deepburn,
i have done a bit of fishing in the area...generally you have to walk for your fish so get a decent gielie and dont take the first guy that you come across...get someone that comes across as decent...thre are a few chancers around..
Hole in the wall has plenty of good venues but as i said you have to walk a bit....take a long gaff along...imperative.
While you are there drop in at White Clay b&b and ask for directions to red rock which is just along the way...you will have safe parking and they have a great bar and grub. White clay is on the way to hole in the wall on the left..cant miss it and great ownners..contact me if you need more details good luck