Cortland Gel Spun Fly Line Backing – 300 yds

The Cortland Gel Spun Fly Line Backing (300 yards) is a high-performance backing designed for fly fishing, particularly when targeting large, powerful fish that may make long runs. Here’s what you need to know:

Cortland Gel Spun Fly Line Backing - 300 yds

Key Features:
– Material: Made from gel-spun polyethylene (GSP), which is stronger and thinner than traditional Dacron backing.
– Strength: Typically rated at 30-50 lb test (depending on the model), offering exceptional breaking strength for its diameter.
– Thin Diameter: Takes up less space on the reel, allowing for more backing capacity or room for a longer fly line.
– Low Stretch: Provides minimal stretch, ensuring solid hook sets and better control over hard-fighting fish.
– Abrasion Resistant: Holds up well against rough reel frames and fish teeth.

Best Uses:
– Saltwater Fly Fishing (tarpon, permit, bonefish, etc.)
– Large Freshwater Species (steelhead, salmon, big trout, pike/musky)
– Situations where long runs are expected (e.g., fast currents or strong fish)

Pros:
✔ Extremely strong for its diameter
✔ More backing capacity on the reel
✔ Smooth, knot-friendly material
✔ Resistant to water absorption

Cons:
✖ More expensive than Dacron backing
✖ Slippery—requires secure knots (e.g., Albright knot for attaching to fly line)
✖ Less shock absorption than Dacron (can be a concern with light tippets)

Alternatives:
– Dacron Backing (cheaper, more stretch, better for general use)
– PowerPro or other braided superlines (similar performance, but may not be fly-reel optimized)

Final Verdict:
If you’re chasing strong, fast-running fish and need maximum backing capacity without sacrificing strength, the Cortland Gel Spun Backing is an excellent choice. For average freshwater fishing, standard Dacron may suffice.

Would you like recommendations for knots or reel setups with this backing?