Structure is (really) good, but don't rule out long, featureless, surf beaches. My two best bass this year (largest 8lbs+) came from the middle of a Pembrokeshire beach with absolutely no features/rocks etc except at the ends!
I fish the beach like a long (boring) salmon pool: cast and side step, cast and side step etc. The bass seem to patrol up and down the line just behind and where the waves break, so I just need to find them.
No need to cast far: in bad weather (which the bass LIKE) I probably cast closer to 15 yards than 20 yards. But they are out there all right, and give a terrific fight on a fly rod.
I agree that bass are usually quite close in and they do seem to prefer rocky shorelines. On a few occasions I've actually seen bass come from behind a rock and take my lure.
I had a couple of hours lure fishing at Llanddulas today, didn't see anyone catching. Checking local catch reports it seems fishing has been good this season, but it's gone a bit quiet since the recent storm broke up the big shoals of mackerel and whitebait.