I started tying a version of this crab fly about 10 years ago. It started as a permit crab that I was tying for customers. Soon after, I made slight adjustments to make it more appropriate for striped bass. Now, over the years it has been slightly tweaked, such as the addition of a jig hook, but remains essentially the same. The basic foundation of this fly is a combination of the EP Crab and (Del Brown's) Merkin.