I went out pretty late this evening but still managed to get some photos of the heavy swell near St.Finians Bay. The light went very quick which gave me the chance to play a bit with long shutterspeed. The first image was taken with a 1/13 sec, f /13 . The picture at the bottom was taken with a pinhole cap that fits on my camera instead of a lens.
The pinhole has an aperture of f /128, so I ended up with a shutterspeed of 50 seconds. Although the waves were scary high, there was no wind and my tripod was standing sound on the rocks.