I decided cut this part from the previous post to make a separate post about the vertical casting stroke, as it really is what every fly fisher(wo)man should learn as the foundation cast. This cast, certainly for trout fishing, could as well be useful for 80% (80/20 rule) of all situations.
The last couple of years it dawned on me how fly casting is pictured as difficult to learn. In spite of all the books, articles on the internet and especially videos on Youtube about fly casting. Maybe instructors just want to make it look like rocket science? My guess is that most instructors just don't know what the foundation cast is!
The foundation cast, the vertical casting stroke, is actually very easy to learn. Just pretend you're running: move your arms back and forth while holding the lower arm at an angle. Notice your elbow is going up and down, this is the key to understand the vertical casting stroke (aka San Fransisco's Golden Gate casting club style)!
Casting with a fixed pivot
Very often I see casting where the movement is fixed at a 'pivot' (or joint). This is commonly either the wrist (especially with beginners) or the elbow with the lower arm moving back and forth like a wind shield (or a metronome). Or even worse, side arm casting with the lower arm moving 'outside' (away from the body).
If the casting movement consists of movement only at one pivoting point (joint), this will result in a casting stroke with the tip of the rod that follows an arc (visualise the wind shield of a car screen). The fly line will follow the tip of the rod and the loop will be (very) wide.
The result will be the same what ever the angle a caster is holding his/her rod. Casting in an arc, or 'wind shielding', will result in loops that will either get wider or even turn into an inefficient 'S-loop' if you also rotate with your body (see video below).
The vertical casting stroke
The basic vertical casting stroke involves the shoulder (much stronger muscle than your arm muscles!) to pivot, similar to how you move your arms when you run, while the elbow and lower arm act as a 'steering wheel' to get the right casting arc depending on the distance you want to cast. The wrist (no more than a hair's movement!) gives the final acceleration at the end of both the back and forward cast.
The vertical casting stroke is surprisingly easy to master even to a level of looking effortless, because casting should be effortless!
Here, Whitney Gould shows the basic vertical casting stroke. Notice the elbow moving up and down (and not moving away from the body as in the side arm cast). The difference from the 'running arm movement' is that the 'back' swing of your elbow (end of the forward cast) stops around the lowest point (just above your hip). By the way, don't forget to adjust the angle of the casting stroke as well as the trajectory depending on the distance you're casting!
Here's one of the many casting 'instruction' videos on Youtube. This guy is showing his casting as so many casting instructions show as being the basic casting stroke: side arm casting and here even with the upper arm raised up which puts a lot of stress on the shoulder. Notice on his back cast he is also rotating with his body resulting in an inefficient S-loop: look at the loop of the fly line the moment he starts to rotate his body.
First of all this casting 'style' which I see so often is very tiring (do this the whole day and you'll end up with a very sore shoulder). In fact some people seem to even get casting injuries! Using this casting style is also very difficult to get consistency in the casting stroke. Try this with your non casting arm and you'll notice how difficult it is to get your back and forward cast move & look the same (= rod tip traveling in one plane, at any angle for that matter).
With the vertical casting stroke it's quite easy to cast a nice tight loop traveling at a vertical plane with the non dominant arm in a matter of a few minutes!
How do I know this all?... 😀
Update 1 Juli 2024:
Listen to this podcast with Maxine McCormick. The youngest fly casting world champion. Here she explains how the basic casting movement works. There are many tips by Maxine, around 37:00 Maxine talks about what she calls the up & down movement where the shoulder rotates, much like the running movement.
Update 30 Dec 2022:
Check out this video of John Juracek showing the foundation cast.
This video shows how effortless and beautiful the vertical casting stroke looks like. Because that's what good casting is: effortless