What is the Best Weight for Backing Fly Fishing ? A Complete Guide

Are you wondering what is the best weight for backing fly fishing ? You’re not alone! Choosing the right backing weight is crucial for a successful fly fishing adventure, but it can be a bit confusing with all the options out there. In this guide, I’ll walk you through everything you need to know to make an informed decision. Whether you’re targeting trout in a small stream or battling tarpon in the saltwater flats, I’ve got you covered! Let’s dive in and find out which backing weight is right for your fly fishing needs!

What is Fly Fishing Backing?
To determine what is the best weight for backing fly fishing, it’s essential to understand what backing is and why it’s important. Backing is a thin, strong line that sits between the fly line and the reel arbor, providing extra length in case a fish makes a long run. It serves as a safety net, allowing anglers to fight large fish that take out more line than the fly line alone can handle.

Purpose and Importance of Backing in Fly Fishing:
To understand what is the best weight for backing fly fishing, we need to consider its primary purpose—providing additional line capacity. Most fly lines are about 90 to 100 feet long, but many fish can easily swim farther than that. Backing extends the total line length, ensuring you don’t run out of line when playing a big fish.

Different Types of Backing Material:

  • Dacron: Made from polyester, Dacron backing is widely used due to its durability, resistance to rot, and affordability. It has a moderate stretch and is available in weights like 20 lb. or 30 lb.
  • Gel Spun (GSP): Gel Spun Polyethylene is thinner and stronger than Dacron, providing more backing capacity on the reel. It has low stretch, which can improve sensitivity but may also put more stress on knots and leader connections.
A close-up of a fly fisherman's hands, wearing gloves, gripping a fly fishing rod with a cork handle. The reel is visible, wound with green line, against a blurred background of water, highlighting the precise and attentive nature of fly fishing.

2. Key Factors to Consider When Choosing Backing Weight

To decide what is the best weight for backing fly fishing, consider several key factors:

Fish Species and Their Typical Size:
Different species require different backing weights due to their size, speed, and fighting ability. For example:

  • Trout: 20 lb. Dacron backing is usually sufficient.
  • Bass or Pike: 30 lb. backing provides extra strength for larger freshwater fish.
  • Saltwater Species (Bonefish, Tarpon, Redfish): 30 lb. to 50 lb. Gel Spun backing is recommended for added line capacity and strength.

Fishing Environment: Freshwater vs. Saltwater:
Knowing the environment helps answer what is the best weight for backing fly fishing. Saltwater fishing typically demands stronger backing due to the size and speed of the fish and the harsh environment, while freshwater fishing often requires lighter backing.

Fly Line Weight Compatibility:
Matching the backing weight to the fly line weight is crucial to maintaining a balanced setup. For example, a 5-weight fly line typically pairs with 20 lb. backing, while an 8-weight line may need 30 lb. or more.

Length of Backing Needed:
The amount of backing required depends on the reel capacity and the species targeted. For instance, for trout fishing, 50-100 yards of 20 lb. backing is often enough. For saltwater fishing, anglers may need up to 200-300 yards or more.

When considering what is the best weight for backing fly fishing, here are some recommendations based on different scenarios:

Trout and Small Freshwater Species: 20 lb. vs. 30 lb. Backing
For trout and other small freshwater fish, 20 lb. Dacron is usually sufficient. It provides enough strength and capacity for the typical fly reel (source: Orvis, “Choosing the Right Fly Fishing Backing”).

Bass, Pike, and Larger Freshwater Fish: Optimum Weight Range
For species like bass and pike, a stronger 30 lb. Dacron backing is recommended. It offers extra durability and is less likely to break under the stress of a larger fish (source: Scientific Anglers, “Fly Line Backing Guide”).

Saltwater Species: Ideal Backing Weights
For saltwater species like bonefish, tarpon, and redfish, 30 lb. to 50 lb. Gel Spun backing is ideal. Gel Spun offers a thinner diameter for more capacity and higher strength (source: RIO Products, “Saltwater Backing Selection”).

Big Game Fish: When to Use 50 lb. or Higher Backing
For larger species like tuna or sailfish, anglers should use at least 50 lb. backing. Some anglers may opt for 80 lb. backing to ensure they have enough line capacity and strength to fight big game fish (source: Fly Fisherman Magazine, “Big Game Fly Fishing Tips”).

4. Choosing the Right Backing for Different Fly Reels

Understanding what is the best weight for backing fly fishing also involves selecting the right backing for your reel:

Understanding Reel Capacity:
The reel’s capacity dictates how much backing it can hold, considering the diameter and weight of the backing. Most reels specify the capacity for both 20 lb. and 30 lb. backing along with a specific fly line weight (source: Hatch Reels, “Fly Reel Specifications”).

Tips for Spooling the Correct Amount of Backing:
Always fill the reel to about 1/8 inch from the edge of the spool to ensure optimal casting performance and prevent line snarls (source: Fly Fisherman Magazine, “Reel Spooling Guide”).

5. Pros and Cons of Different Backing Weights

To further understand what is the best weight for backing fly fishing, consider the following pros and cons:

Advantages of Light vs. Heavy Backing:

  • Light Backing (20 lb.): Ideal for small fish, providing more capacity on smaller reels.
  • Heavy Backing (30 lb. or more): Offers greater strength and durability, suitable for larger fish.

Durability, Abrasion Resistance, and Knot Strength Considerations:
Heavier backing like Gel Spun is more abrasion-resistant and has higher knot strength, which is crucial when fishing in rugged environments (source: Orvis, “Fly Fishing Knot Guide”).

Cost vs. Performance Analysis:
Dacron backing is generally more affordable, while Gel Spun, being thinner and stronger, tends to be more expensive (source: RIO Products, “Choosing Backing Material”).

A of what what is the best weight for backing fly fishing looks like , with a fly fishing rod with a cork handle and a black fly reel, resting on a rustic wooden surface. A pair of wading boots is partially visible in the background, suggesting a fly fishing setup ready for use.

6. How to Determine the Best Backing Weight for Your Fly Fishing Style

To conclude what is the best weight for backing fly fishing, you need to:

  • Assess Your Target Species and Typical Fishing Conditions: Consider what species you are targeting and the environment you are fishing in.
  • Consider Your Fly Line and Reel Setup: Match the backing weight to your fly line and reel capacity.
  • Personal Preferences and Experience Level: More experienced anglers may opt for Gel Spun for its thinner diameter and higher capacity.

7. Expert Tips for Backing Fly Fishing Setup

  • Tips from Seasoned Fly Fishing Experts: Choose backing weight based on target species, environment, and personal experience.
  • Common Mistakes to Avoid: Ensure correct spooling, use appropriate knots like the “Arbor Knot” or “Nail Knot,” and check for abrasions regularly.
  • Maintenance and Care Tips: Rinse the backing with fresh water after saltwater use and store it in a cool, dry place to prevent damage (source: Fly Fisherman Magazine, “Fly Line Maintenance Tips”).

Conclusion:

Determining what is the best weight for backing fly fishing depends largely on your specific fishing scenarios, the species you’re targeting, and your personal preferences. By understanding the basics, considering key factors, and choosing the right setup, you’ll be prepared for whatever the water throws your way. So, what’s your next step? Head to your local fishing shop or explore online, and get the right backing weight for your next fly fishing adventure!

References:

  1. Orvis, “Choosing the Right Fly Fishing Backing,” Orvis.
  2. Scientific Anglers, “Fly Line Backing Guide,” Scientific Anglers.
  3. RIO Products, “Saltwater Backing Selection,” RIO Products.
  4. Fly Fisherman Magazine, “Big Game Fly Fishing Tips,” Fly Fisherman Magazine.
  5. Hatch Reels, “Fly Reel Specifications,” Hatch Reels.

I'm Mike Thompson, a fly fishing enthusiast from West Virginia with over 20 years of experience casting lines and tying flies.
At FlyFishr.com, I share my passion for the sport through tips, techniques, gear reviews, and stories from my adventures on the water.
For me, fly fishing is more than a hobby—it's a way of life, and I love connecting with fellow anglers who feel the same. Let's explore the world of fly fishing together!