This fly does it all, and boy it does it well. Black leech is a jack of all trades. You can fish it streamer style, on a nymph rig or even in a dry dropper. This fly mimics leech but it can pass as small fish or larger nymph. I’ve caught more fish on this than any other fly, its so effective that I don’t even like to fish it😂It’s simple easy to tie and catches loads of fish, what more can you ask. I usually tie this with golden tungsten bead, but I don’t have any currently. This works with or without a bead, I’m convinced this would work even without a hook.😂 Caught my personal record seatrout on size 10 leech, 72cm. Photo is attached, couldn’t find one with the fly still hanging from the lip.