Waves are very nice indeed. How high did you set the roughness? There's a few things you can do if you like to pursue this one. Foam on wavetops (by altitude, e.g.) and foam around the island (use the SSS with a color adjust, if it's a bit of a soft SSS that is, otherwise copy and make that a softer one). Also get the existing foam more in distinct wind driven stripes, or patches, not so many like now.