think I posted some specifics about courtmac here last year, have a search
you can walk out past the hotel , through the woods to a fairly good spot for mackeral and pollack, seen a garfish out there too.
there is a pier on the opposite side of the bay from the hotel / lifeboat , which has been a great spot for bass and bream in recent years, with the odd flatfish too, plenty of lug over there too.
Mullet further inland, nearer the town / bridge.
Never had any joy on the beach in front of the hotel, but good fishing at various tide (think mostly low, strangely) all around there.
There's a beach just over the hill from Courtmac village that you'll look at and want to fish, looks spot on,...... don't bother !!
Would love to be down there this weekend, good pubs and craic.
good luck