# **How to Choose Trout Flies: The Twin Blue-Eyed Blue Flash Olive Damsel Leech – Deadly Flies**
When it comes to trout fishing, selecting the right fly can make the difference between a slow day on the water and an unforgettable catch. Among the most effective patterns for targeting aggressive trout is the **Twin Blue-Eyed Blue Flash Olive Damsel Leech**, a deadly fly that imitates both damselfly nymphs and leeches—two of the trout’s favorite prey.
In this guide, we’ll break down why this fly is so effective, how to fish it, and what makes it a must-have in any angler’s fly box.
## **Why the Twin Blue-Eyed Blue Flash Olive Damsel Leech Works**
Trout are opportunistic feeders, and their diet often includes aquatic insects, baitfish, and leeches. The **Twin Blue-Eyed Blue Flash Olive Damsel Leech** is designed to mimic multiple food sources, making it incredibly versatile.
### **Key Features:**
– **Realistic Profile:** The slim, segmented body mimics both damselfly nymphs and leeches, two high-protein meals trout actively hunt.
– **Flash & Movement:** The **blue flash** in the material creates subtle reflections underwater, triggering predatory strikes.
– **Weighted Design:** Many versions are lightly weighted to help it sink naturally, allowing for a slow, enticing drift.
– **Dual Eyes:** The **twin blue eyes** add realism, making the fly appear more lifelike in the water.
## **When & Where to Fish This Fly**
### **Best Conditions:**
– **Stillwaters & Slow-Moving Rivers:** Ideal for lakes, ponds, and slow sections of rivers where trout hunt near weed beds.
– **Early Morning & Late Evening:** Trout are most active during low-light periods when damselflies and leeches are moving.
– **Spring & Summer:** Damselfly nymphs are abundant in warmer months, making this fly particularly effective.
### **Retrieval Techniques:**
1. **Slow Strip Retrieve:** A gentle, intermittent strip mimics a wounded leech or a swimming damselfly nymph.
2. **Dead Drift:** Let the fly sink and drift naturally with the current, especially near drop-offs or weed edges.
3. **Short Twitches:** Small, erratic movements can trigger reaction strikes from aggressive trout.
## **Why This Fly Belongs in Your Fly Box**
The **Twin Blue-Eyed Blue Flash Olive Damsel Leech** is a **proven trout killer** because it:
✅ **Mimics multiple prey species** (leeches & damselfly nymphs)
✅ **Works in various water conditions** (stillwater, rivers, and streams)
✅ **Triggers aggressive strikes** with its lifelike movement and flash
If you’re serious about trout fishing, this fly should be a staple in your collection. Whether you’re fishing pressured waters or looking for a reliable pattern to fool big trout, the **Twin Blue-Eyed Blue Flash Olive Damsel Leech** delivers.
### **Gear Recommendation:**
For best results, pair this fly with a **floating or intermediate line** and a **9-foot 4X-5X leader** for a natural presentation.
**Try it out on your next trip—you won’t be disappointed!**
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