Karl, that one is in Kelvin's gallery so he is the likely fly tier. If not it looks a lot like a Kerfwappie epoxy head. Both do magical things with baitfish patterns and I'm glad to have a few flies from each of these guys in my saltwater box. Both are also super fishy guys that are as nice as any other you'll have the opportunity to meet. I bet if you send them a PM they'll share what they do.