The Mole Fly Emerger is genius in its simplicity. This is, in our opinion, fly design at its finest…Mr Craven at it again! This fly is designed to be an emerger. The wing sits above the water, while the body drops just below the surface. Insects that are in this stage of hatching are helpless….and fish like an easy meal. The key to this fly is to use natural dubbing – either beaver or rabbit. Natural dubbing will absorb water and help the body sit just below the surface.