A trial is primarily performance art. The theatrical aspects are enhanced by Stick Figures, drawn in real time to illustrate a point of law to the jury.
Instead draw stick figures on whiteboard, as you talk. That makes the graphic renderings an interactive experience for jurors. Also, members of the media at the trial might become engrossed.
In Bloomberg Business Week, Ira Sanger describes the research which confirms that stick figures are more powerful than PowerPoint. Here is that BBW coverage.