Cast Trajectory & Head Winds (in 500 Words)
Today we are having the first really serious Pacific storm of the year here in the Portland area. Slashing rain and wind gusts over 40 mph are on tap, and it got me thinking about casting in the wind—specifically into head-winds. I have a lot to say about the subject, but to keep things reasonable, I decided to write a post with the primary content limited to 500 words (and an illustration). So, at the risk of painting with an overly broad brush (and in the world of the casting geek, that’s always a risk), here’s “Cast Trajectory & Head Winds (in 500 Words).” Hope that a few readers find it useful.
Trajectory—the back-to-front “tilt” of the cast—is a useful component for casting into the wind. By aiming a cast so that it finishes unrolling just above the water’s surface, you gain two advantages: First, the front taper of the fly line and the leader will likely be exposed to as little wind-speed as possible. Over open water, this advantage may be fairly slight (but I’m still willing to take a shot at “slight” over “none”). It can be a more apparent advantage if you are casting toward a “wind-shadow” created by a nearby object such as a high bank. Second, because the fly will be as low to the water as possible after the loop unrolls, its final position will be altered by the wind as little as possible. Actually driving the fly directly onto the water will prevent the wind from moving it in the air, but may not give you the quality of delivery that you are after (such as when you are looking for a reduced-drag drift over touchy fish).
This concept of using trajectory in a head wind may seem limited to “pin-point” deliveries, and not to general long-range casting, such as when “searching” over a large area of water. But, when you get down to it, no matter how tight your loops are and no matter how well you can haul, you are eventually going to reach a limit as to what you can accomplish in terms of distance against the wind. If you can tune your trajectory to better match that limit, then you can maximize your casting potential even when simply trying to cover as much water as possible.
And don’t think that head-wind trajectory only applies to fully aerial casts. I typically tune trajectory actively when making Roll and Switch/Spey-style casts. Rather than simply firing a delivery up-and-out to be battered by the wind, I will often direct my forward cast to unroll where I want it to unroll. That may mean a downward trajectory—even along the water’s surface in some cases—that seems at odds with the classic image of a monster Switch/Spey cast being launched “somewhere out there.”
Changing the trajectory of your cast may require more of a “lifting-up-and-pulling-down” motion (for overhead-style casts), or a rising, higher-angled backcast with a dropping, lower-angled forward cast for side-arm or across-the-head positions. Keep in mind that casting side-arm or across-the head with a trajectory parallel to the water means that your cast will unroll over the surface rather than onto the surface. You may want that, depending on conditions and desired fly delivery, but then again, you really may not. Few things are as irritating during presentation as having your aim being directed one way while your fly heads the other.
I suggest that you take the time to practice casting in a head wind, altering trajectory and watching the resulting effects. Do that and you’re likely to enjoy greater success no matter where you cast your fly.


























































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