Admittedly not as big as some of the other famous surfing locations in Scotland, but Machir Bay on the west coast of Islay has a fairly frequent supply of waves. Here’s a young man surfing one in April 2014.
A view over Machir Bay from the Bealach na Caillich, the southern end of the Kilchoman Crags on the right. If you look carefully you can see Granny’s Rock, the silhouette of a face, at the very top.