Step 1:
Slide the slotted tungsten gold bead onto the hook, small opening first, facing the eye. Turn the hook upside down and give it a shake. This will turn the bead in the correct position (see illustration) Pull the bead up and add a small drop of Super Glue on the inside bend, just behind the eye of the hook to fix the bead in place.
Step 2:
Place the hook in your vice and start winding the Olive/Brown thread from behind the bead covering the shank of
the hook.
Perdigon nymphs originates from France but the Spanish enhanced it and named it. Perdigon means pellet in Spanish, due to its slender lines and quick descent characteristics, much like a pellet. The “blob” sound it makes hitting the water also draw some fish. Perdigon nymphs can be tied in a range of sizes but smaller versions, #14 through to #18, work best.
Hook and bead choice is key when tying perdigon nymphs. The fly is designed to ride on its back to avoid snagging rocks and debris when fished just above the bottom. Jig hooks with and oversized bead are used most of the time but straight shank nymph hooks will also work well.
Dressing the hook is critical as this is where the fly needs to be slender and smooth for fast sinking to the bottom, where the majority of fish feed. Take your time when tying in the materials. Be gentle and precise which will result in a smooth good looking Perdigon fly.
The Perdigon has been very successful in the Vaal. Depending on the size and flow, it can be used as a control fly (heaviest fly) or as a point fly.
Here is a step by step method to tie a winning “Hot Spot” Perdigon for the Vaal river.