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.
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 Micro-Olive Specialist – J:son Mayfly Spent 4 Olive Grey (Hook #22) The Olive Grey Spent #22 is the ultimate imitation for the smallest olive-colored mayflies in their final life stage. When tiny species like Baetis niger or late-season generations of other small olives die and fall onto the water, their bodies often take on a pale, olive-grey, almost translucent tone. In a size #22, this imitation offers the exact micro-profile required to fool fish that are rising selectively during massive spinner falls.
Imitating such small insects requires extreme precision. This fly delivers a perfect "flat-wing" profile and a lifelike foam body that remains buoyant without the need for heavy hackle. We know it can be difficult to thread the leader through the eye of very small hooks; therefore, even though the hook itself is a #22, we have ensured the hook eye remains at least a size #18. This makes rigging your fly significantly easier, especially when the light is fading and the fish are rising most intensely. The Olive Grey #22 is an indispensable tool for technical fishing in crystal-clear waters.
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.