A hook-less fly crafted on a core other than a hook is described for attachment to a line at a material distance from a distal circle hook. One or more fly(s) may be attached to a single line at a point above a single circle hook. The separation on the line of hook from fly requires only the fly to enter the fish's mouth. The hook, when a fish takes the fly, is externally located. Striking the rod in response to the fish taking the fly draws the line through the fish's mouth and engages the distally located circle hook into the outer jaw.
You may remember it as the Moffit System.