由 John-Paul Duff 
# **How to Choose the Rio Mainstream Type 6 Full Sinking Fly Line (Black, Size WF5S – Type 6)**
As an angler, selecting the right fly line is crucial for achieving optimal performance in different fishing conditions. The **Rio Mainstream Type 6 Full Sinking Fly Line** is a top-tier choice for those targeting deep-water species or fast-moving currents. In this guide, we’ll break down its key features, ideal applications, and why it might be the perfect addition to your fishing gear—especially if you’re looking for a high-quality, fast-sinking line.
## **Understanding the Rio Mainstream Type 6 Fly Line**
The **Rio Mainstream Type 6 Full Sinking Fly Line** is designed for anglers who need their flies to reach deeper depths quickly. The **”Type 6″** designation means it sinks at approximately **6 inches per second**, making it ideal for fishing in deep pools, lakes, or fast-flowing rivers where a slow-sinking or floating line wouldn’t be effective.
### **Key Features:**
– **Fast-Sinking Performance (6 IPS):** Perfect for getting flies down to trout, bass, or saltwater species holding in deep water.
– **Durable Construction:** Built with a high-quality coating that resists abrasion and extends the line’s lifespan.
– **WF5S (Weight Forward, Size 5, Sinking):** The weight-forward taper ensures smooth casting and better turnover, even with larger flies.
– **Black Color:** Low visibility underwater, reducing the chance of spooking fish in clear conditions.
– **Affordable Yet High-Performance:** Part of Rio’s **Mainstream** series, offering professional-grade performance at a more accessible price point.
## **When to Use a Type 6 Full Sinking Line**
A **Type 6 sinking line** is best suited for scenarios where you need to:
– Fish **deep stillwaters** (lakes, reservoirs) where trout or other species stay near the bottom.
– Target **fast-moving currents** in rivers where a floating line can’t maintain depth.
– Work with **streamers or nymphs** that need to stay deep for extended periods.
– Fish in **saltwater environments** where sinking lines help reach fish holding in deeper channels.
### **Matching the Line to Your Rod & Reel**
The **WF5S (Weight Forward 5 Sinking)** is designed for a **5-weight fly rod**, which is versatile enough for medium-sized freshwater species. Pair it with a reel that has a smooth drag system to handle strong fish when fishing deep.
## **How to Fish with a Full Sinking Line**
1. **Cast and Let It Sink:** Unlike floating lines, a sinking line requires patience—allow it to reach the desired depth before retrieving.
2. **Retrieve Techniques:** Use **strip retrieves** for streamers or a **slow hand-twist** for nymphs to imitate natural movement.
3. **Depth Control:** Count down (e.g., “1-Mississippi, 2-Mississippi”) to estimate how deep your fly is before starting the retrieve.
## **Why Choose the Rio Mainstream Type 6?**
Compared to intermediate or slower-sinking lines, the **Type 6** is unmatched when you need to get deep fast. Its **affordability** in the **Mainstream series** makes it a great entry point for anglers who want professional sinking performance without breaking the bank.
### **Final Thoughts**
If you’re serious about deep-water fly fishing, the **Rio Mainstream Type 6 Full Sinking Fly Line** is a reliable, high-performance option. Its fast-sinking rate, durable construction, and smooth casting make it ideal for targeting fish that other lines can’t reach.
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**Tight lines!** 🎣