If I remember right I ended up tying about 3 dozen for the movie. I worked as a consultant for a large fly fishing company that paid me as they helped with the movie.
You can believe this or not but I was also the first "Shadow Caster" To. I was asked to go down to the local park so the producer could see how casting might look on camera. We went down to the park and I stood on the old dock and started casting. He watched and then asked me to make bigger loops which I did. They kept getting bigger and bigger and he was going nut's about how great it looked. I told him is was not proper but he loved it and that is how it got in the movie. Had nothing to do with right or worng. It was how the producer liked to see the line in the air. Now that is the truth about how shadow casting got in the movie. Wrong Place at the Right Time I guess. Ron