Description
When trout feed on Spent Spinners, they do it with comfort. These dead or dying mayflies will not fly away, making them an easy, high-protein meal. The rise is typically slow and methodical, often in a classic "head-and-tail" style. Many anglers find this stage difficult, as fish become extremely selective when hundreds of spent spinners blanket the surface.
Our Commitment: Perfect Imitation To succeed and perhaps hook the fish of a lifetime, you must observe where the fish feeds and ensure your presentation is flawless. But just as important is the imitation itself. Because the insect is stationary, the fish has plenty of time to scrutinize your fly.
Our commitment is to provide imitations of the real insect where the fly has the right shape, size, proportions, and colours, and, not least, leaves the correct print on the surface of the water. This imitation of an adult mayfly in the Spent stage possesses all the right properties. It looks natural, feels natural, and fish will eat it.
The Versatile Spinner – J:son Mayfly Spent 1 Olive Grey (Hook #10) The Olive Grey Spent #10 is a master of disguise, imitating a vast range of larger mayflies that have reached the end of their life cycle. Many common species, such as larger Baetidae or Heptageniidae, transition into a more muted, greyish-olive tone in their spent stage. This fly is your primary choice when you see a diverse mix of insects on the water but notice the fish are specifically targeting the darker, flat-winged silhouettes.
Tied on a sturdy size #10 hook, this fly excels in the surface film. J:son’s specialized foam body and wing material work together to ensure the fly stays balanced and flush with the water, providing the fish with a clear, vulnerable target. Whether you are fishing a large river or a mountain lake, the Olive Grey #10 is a reliable pattern that bridges the gap between different species, making it an essential part of any serious fly fisher's arsenal.
Correct Surface Print: The imitation creates the precise flat-winged silhouette on the water film that triggers even the most selective fish.
Optimal Realism: Designed to mimic the spent, exhausted mayfly lying flush in the surface film after egg-laying.
High Quality: Exact proportions and biological colours that perfectly match the natural insect’s final life stage.
Pro Tip: Use a Swivel for Perfect Presentation Because J:son realistic flies are designed with anatomically correct wings, they act like small propellers in the air during casting. This can cause your leader to twist, leading to tangles and poor presentation.
To prevent this and ensure your fly lands perfectly every time, we strongly recommend using a J:son Anti-Twist Swivel. This simple addition will eliminate line twist and let you focus entirely on the fish.