Sometimes when you’re brim fishing over moss you need a semi-weedless fly to “tick” the moss on the retrieve. The bentback spider or weedless spider is oftentimes the ticket.
Take a aberdeen hook and bend it slightly. Too much bend will make the fly twist.
add some sparkle yarn or chenile
right at the bend add legs; you can use 2 or 3 on each side. I use 2 generally because its easier than 3.
Take a small tuft of squirrel tail and tie in just in front of the legs, extending past the hook point. Build up a thread head, coat head with sally’s and go fishing. Secret to success with the spider is to fish it slow; cast it out, let it slowly sink, and twitch it ever so slightly. If youre fishing with a floating line and leader with tippet, the twitch will cause the fly to rise in the water column; then let it drop again, slowly.