Do you sometimes get lots of little knots in your leader when casting?
We if you do, it’s often because you are casting with what is known as a tailing loop. With out going in to physics, tailing loops and the knots in your leader can often be formed because you are putting too much power into your cast or your application of power is jerky, uneven or you are using a throwing action.
Try backing off the power, slowing down your casting strokes and generally smoothing out your casting action. It’s amazing how much power you can take out of the fly cast and still cast a beautiful long line!
Here’s a video I found on you tube that shows how a tailing loop is formed: