Substance & Style in Fly Casting

Technique — March 4, 2019 — 7 min read — Updated June 9, 2026

Substance & Style in Fly Casting

Substance and style in fly casting are two distinct concepts that Mel Krieger introduced to Fly Fishers International in the early years of the casting program — and the distinction remains the most important framework in fly casting instruction today. Style is HOW the body moves — stance, grip, elbow position, wrist involvement. Substance is WHY it works — mechanics, rod tip path, loop formation, force application. Style is personal and infinite. Substance is universal. When style limits intent, it becomes a teaching moment. When substance is understood, any style can be evaluated, corrected, and optimized.

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Substance & Style in Fly Casting

Instructor Observation on Substance & Style

Instructor observation on substance and style has been around for a long time. The late Mel Krieger introduced the concept to the FFI during the early years of the fly casting program. As fly casters, all fly fishers seek to gain a better understanding of their own journey over time. Many will seek one-liners or little phrases that attempt to solve everything. This is normal for everyone in the early stages. We call this aspect of their journey "they drank the Kool-Aid." This is, in part, what is wrong today overall with fly casting globally. The complexities in fly casting have many facets that make up intent. In teaching, I have found that it is best to address them all with a basic understanding of the mechanics. Mel referred to these in his early writings as FUNdamentals.

New fly casters often seek a new understanding through one-line "grail" sentences to apply to countless circumstances. The problem with this approach is that overall understanding becomes quite limiting. Practically every change in style influences many things for substance. Complexities in mechanics are really quite simple if you develop a basic understanding and strong foundation from the beginning. instructor observation substance style

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Troutfest Texas on the Guadalupe Offered Fly Casting Classes All Day Long

Egos & Style

Most of the early legends who attempted to make positive change had issues with other styles. The friendly discussions on substance often lagged well behind. It is impossible to demonstrate anything in fly casting without a style. Stances, grips, body movements, and all other physical elements exhibit a style. Style, simply put, is "HOW" the body moves. The goal is driven toward a specific intent—hopefully catching a fish. Egos become a large part of the problem overall because of a lack of compromise and awareness of FUNdamentals.

They were all proficient in casting but quite stubborn about seeing another peer instructor's point of view. The beauty of mechanics is that it is much easier to discuss! It is a shame that many early pioneers of the sport did not delve into more sound principles first. One could easily argue that their overall lack of very simple mechanics limited their approach. All people are built differently and perform casts in different ways. As instructors, I think it is best to embrace them all for a specific intent. When style limits intent, then it becomes a teaching moment.

Example of Oversimplified Substance Rhetoric

For decades, it has been common to discuss distance casting with sayings like "increase your line speed with narrow loops." For new to intermediate casters, this misses many key points. If the saying were working, they would already be casting great distances and making it appear easy, right? What does increased line speed mean to you, and what changes need to occur? Stroke length changes, rod arc changes, a longer time period to accelerate, hauling the line, and increases in overall tempo, to name a few.

The narrow loop is actually misleading as well, because it is much more likely to create a larger loop formation with all the facets of increasing line speed mentioned above. If you do not believe this, just try to carry a really long line with a narrow loop during formation. All loops change during flight, which we refer to as "morphing." The statement above sounds good when reciting it to new students, but it leaves out many key points that help make it happen. Throwing a flat fly leg faster with parallel loop legs is often a productive approach.

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Guadalupe River at the Texas TroutFest

Instruction & the Road to Critical Thinking

Part of the issue in teaching fly casting is that specific intent is often left out in all phases of the sport. Generalizations can be dangerous when learning and understanding. In other words, assuming all fly casts are equal, all people are equal, and all fish feed the same way is absurd. Intent must be understood to apply the six phases of critical thinking: organize the information, structure reasoning, consider evidence, identify assumptions, evaluate the arguments, and finally communicate or implement a conclusion. This is especially necessary for creating great mentors, coaches, and instructors. instructor observation substance style

It is no doubt much easier to repeat the "mantras" of fly fishing rhetoric. In fishing, phrases like "fish lie where the foam is home." In fly casting terminology, statements like "all fly casts should maintain a straight tip-path" and "all fly casts should have constant acceleration." There are hundreds of these prevalent in our sport today. Far too many instructors tend to follow along so as not to go against the grain of "Kool-Aid rhetoric." As an instructor, mentor, and coach, I want to pass on to the student not just a kinesthetic diagnosis of improving their own casting intent. I want them to understand their actions first. This will help evolve the sport down the road because the student can formulate and contribute ideas to push the envelope.

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Casting Class at Texas TroutFest

Pyramid Approach To Fly Casting

The pyramid of typical learning institutions has a broad base of learning at the bottom. The tip of the pyramid, over a long period of time, becomes specific to a particular discipline. It is a total switch to view a specific subject matter first and then broaden later. Learn basic mechanics first to apply them to all specific circumstances of intent later. Two different things are going on here. Do you want to understand and create the ability to solve complex problems down the road?

Would you rather drink the "Kool-Aid" of vastly oversimplified models that all lead to a stagnant approach? I can assure you that becoming a critical thinker, as opposed to regurgitating facts and principles that do not hold water, are two very different approaches. Another way to say this is: what do you desire? Mediocrity with the "just good enough crowd," or do you want to become a problem solver and assist in the evolution of sport? Only you know the answer. If we are lucky, we can help pave the way for creating another effective mentor.

Optimizing Performance with Substance

Fly casting offers many types of progressions during the fly fisher's journey. In the beginning, new fly fishers just want to get the line out a short distance without a leader full of knots. A certain percentage will stay at this level forever. Then there will be those who aspire to higher performance on the water. Substance overall tends to dictate optimizing performance for more elite-level casts. As an example, let us examine one of the foundational fly casts called a static roll cast. For new fly casters, all styles can get you to make fishing casts at 25 feet and closer. Everyone is a winner with whatever style they choose!

Fly casting instructors teach optimization of how to use your body for a cast with specific intent. Now let us optimize the substance for intermediate to advanced static roll casts. The styles will become more specific. Just look at the similarities of optimizing performance at the elite levels. Watch video footage of the top world championship fly casters, and you will see similarities in all elite casters. A rate of movement along an intended rod tip path works beautifully in teaching.

Simplicity for Understanding

There is no doubt the easiest path is to avoid the complexities that only take you so far. Read everyone's A, B, C fundamental principles, and you will stagnate quickly. Foundational principles lead you to improve in the shortest amount of time. Any complex model has many things that influence the minutia details.

The reality is it will take serious commitment in the early stages, and everything else gets easier. This empowers you to take it to the next level and contribute to a great sport, helping change others around you through sharing. The difference lies in that teaching mechanics first leads to everything else falling into place. Through reasoning, you learn to understand it and apply it. Anyone can be taught the kinesthetic approach for any type of cast. Learning to understand why they perform it a certain way brings us back to substance.

Tags

casting iconscritical thinkingfly casting intentfundamentalskool-aid rhetoricloop morphingmecahnics fly castingMel Kriegeroptimizing performancepyramid approach to learningstatic roll caststylesubstance

Frequently Asked Questions

What is the difference between substance and style in fly casting?

Style is how the body moves during the cast — stance, grip, elbow position, body rotation, wrist involvement, haul timing. No two expert casters look exactly the same. Substance is the underlying mechanics that make any cast work regardless of style — rod tip path, loop formation, timing of the stop and haul, application of force. Style is personal. Substance is universal. Teaching style as if it were substance is the most common and consequential error in fly casting instruction.

Who introduced the substance and style concept to fly casting?

Mel Krieger introduced the substance versus style framework to Fly Fishers International in the early years of the FFI casting program. Krieger called the foundational elements of casting FUNdamentals — emphasizing that the mechanics underlying any cast are what instructors should teach first, not the stylistic expression of those mechanics. Mac Brown has built on Krieger's framework throughout his 38+ years of teaching in Bryson City, NC and nationally.

What is casting intent in fly fishing?

Casting intent is knowing exactly what you want the line and fly to do before you make the cast — and then selecting the style and applying the mechanics to produce that specific result. Intent determines stroke length, arc, acceleration rate, haul timing, and trajectory. A presentation cast into a headwind requires different intent than a reach cast across a seam. When intent is clear, style naturally organizes itself in service of the goal.

What is the pyramid approach to fly casting instruction?

The pyramid approach teaches basic mechanics first — the broad foundational base — and builds toward increasingly specific applications of those mechanics over time. This is the opposite of the common approach where beginners are given simplified rules and phrases that break down as complexity increases. Mac Brown teaches mechanics first so students can apply them to all specific circumstances of intent — rather than collecting rules that only work in the narrow situation for which they were invented.

How do I find a fly casting instructor who teaches substance over style?

Look for instructors who explain why a cast works — not just what to do. An instructor teaching substance can connect every correction back to a mechanical principle: rod tip path, force application, loop formation, timing. An instructor teaching style will give you body positions and phrases without explanation. Mac Brown Fly Fish in Bryson City, NC offers private casting lessons and all programs built on substance-first mechanics instruction — led by the only FFI Master Casting Instructor in North Carolina since 1987.

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