Trouble-Free Performance with the Right Setup
What Happens Without a Line System?
If you cast and retrieve in Spiral Mode without setting up the proper line system, the running line will inevitably twist.
After as few as 10 casts, the twist builds up, eventually causing line trouble and interfering with your fishing.
The Anti-Twist Solution
Here’s how our dedicated line system eliminates twist.
Once set up, you can cast all day without any issue.
The fly won’t spin either, so your hook-up rate stays unaffected.
Recommended Setup
Fly Line
There are many options, but we recommend short-length fly lines that can cover wide areas efficiently.
This provides excellent casting distance, maneuverability in streams, and smooth retrieves.
Running Line
Use thin PE-based lines with high stiffness.
Stiff lines have better memory and resist twist by naturally unwinding themselves.
As of 2025, we strongly recommend:
- Super FireLine 50lb or stronger from Berkley
(Ideal for double-hand rods)
Manufacturer’s Site - Oddport No.4 (70lb) from YGK
(Great for single-hand rods due to thicker, easier handling. Also usable for double-hand rods.)
Manufacturer’s Site - Gambit Bass Line G7 Super PE 60lb
(Approximately 79.2lb actual strength; short length of 75m but easy handling for single-hand use.)
Note: Monocore lines can be used when distance isn’t needed, but we don’t recommend them due to poor casting performance.
Compatible Rods:
Single-hand, switch rods, double-hand rods — all types work with Spiral Mode, even with haul casts.
The Critical Role of Swivels
Why Swivels Matter
Not all swivels work. Three key criteria:
- High-speed rotation
- Strong tensile strength
- Compact size
Meeting these standards is essential for proper function.
Swivel Technology Makes It Possible
Thanks to years of R&D and innovation by Japanese manufacturers, swivel performance has improved dramatically—making this fishing method viable.
NT Power Swivel — The Best in Class
Made in Japan. Ultra-light (0.07g), yet rated to 21kg strength.
Its smooth, ultra-fast rotation sets it apart from all competitors.
Despite its size, it won’t sink dry flies even when installed in the second connection point.
If this swivel had existed before the invention of spinning reels… we might’ve seen a very different history!
Installation Tips
Heat Shrink Coating
To pass smoothly through guides, we recommend heat-shrink tubing (e.g., Sumitomo Sumitube A 1.5×0.2mm).
This protects the swivel and ensures smooth travel.
Swivel Loop Connector
Creating a large loop on one end allows easy fly line swaps — even while stored in your line wallet.
- 3 connectors per set: ¥1,800
Line System Overview
Two Key Connection Points
- Between fly line and running line
Use a swivel loop connector (right side of diagram) - Between leader and tippet
Use a bare swivel (left side of diagram)
The first swivel absorbs rotational energy during retrieve and drift, keeping your fly line and fly from spinning.
Why Use Two Swivels?
In reality, the first swivel alone is enough to prevent fly rotation and ensure catch efficiency.
So what’s the second one for?
It becomes active only during landing. When a fish is hooked and landed, its weight may introduce twist into the tippet. The second swivel neutralizes this after landing.
What Causes Line Trouble?
Line trouble isn’t caused by twist—it’s from sloppy retrieval.
Just like spinning reels, if you retrieve with no tension (loose, fluffy line), it may eventually result in tangles.
If a knot becomes unfixable, simply cut and reconnect the affected section.
Master the Technique — Zero Trouble
Like any gear, proper handling is key.
Think of baitcasting reels and their backlash — Spiral Mode is far easier to master.
Beginners may forget to maintain tension while retrieving, especially in stillwater.
But the key is simple:
Always retrieve with tension.
Line trouble doesn’t start during the cast — it starts during the retrieve.
Pinch the line lightly with your fingers to feel the tension as you wind it onto the spool.
With experience, you’ll sense the moment tension is lost.
At that point, stop, reverse the spool, and rewind the slack section tightly.