In Writing with Hitchcock (2001), Steven DeRosa noted that Hitchcock supervised them through every draft, asking that they tell the story visually. He told Roger Ebert in 1969: Once the screenplay is finished, I'd just as soon not make the film at all.
A drop kick is a type of kick in various codes of football. It involves a player dropping the ball and then kicking it when it bounces off the ground.
The dropkick is largely similar to a volley. With the drop kick however, in contrast to the volley, the ball touches the ground during the shot. With a volley, the ball is never hit 100% at the optimal moment in time, with the dropkick even smaller fractions of a second will determine success or failure.