Leeches are an all year food for trout and bass.  This tie is a variation on the Coney Leech in that the zonker strip is tied only at the back and front.  This allows for a curve of the strip which is a more natural shape of a leech. In doing so, you need to have a body which in this case is brown chenille held in place by thin wire also palmered.  I caught many trout with this fly last year.
It is a good searching fly and also can be retrieved fast.  Here in Ontario, you have to look for trout so it can be trolled with some speed.  Once you find fish then cast and retrieve as a natural leech would swim.
The mink used is from mink coat scraps sliced 1/8" wide. Use any size streamer hook.