Lay a thread base and tie in a short length of squirmy worm material at the bend so a wiggly tag trails behind; the constant wiggle is the fish trigger.
Strip a short length of Fritz to expose the core and tie it in ahead of the worm tail.
Wrap the Fritz forward in dense touching turns, wetting and stroking the fibers back after each wrap.
Tie off behind the eye, cut with a blade, build a head and whip finish.