Tightly spin on deer hair for the head. Clip deer hair head to shape. Fish the muddler as close to bottom of the stream as you can. Cast across-stream and down and allow the fly to tumble until it sinks to the bottom. Then stop the drift and allow the fly to swing across the current.
Strikes often occur at the start of the swing.
With each ensuing cast simply swing the fly across a bit further down the run. Last but not least are the terrestrials. These land-born insects only become available to the trout during a major hatch, such as the ant hatch, or on windy days. Black carpenter ants are the best known of the terrestrial insects that fish key in on. There are lots of ant patterns, but it is always a problem keeping them afloat.