Just to add my experience, for those curious. I spent 1/2 a day surfing the Delphin at Popham beach this weekend. (John Carmody's demo boat). Breakers were about 2 feet. Occassionally a little bigger.
I was totally sold on it. The boat surfs amazingly, and is really easy to take off with, especially with steeper waves. Positioning is everything with surfing this boat. Line up where the waves just start to stand up, and then you almost don't have to paddle to catch the wave. Just one or two strokes from a standstill. That keeps the stern right up out of the wave, and the big, flat, rockered bow just flies along sticking out of the front of the wave. None of that purling that happens with typical long, skinny bows of sea kayaks. Very easy to maneuver by edging while on the wave. Feels like a great fit for me at 180 pounds, 6' (This was the Delphin 155).
I'd like to try it on a bigger day, paddling a few miles out to rocks, or bigger tidal overfalls - both to see how it feels in bigger more technical conditions, but also to see whether I can put up with covering some distance in this specialized play boat.
It's certainly not a boat to replace your touring boat, but I think it may soon be a companion to my touring boat.