What is the definitive guide to Paul Rogers's one-light hair-light hack?

Sure, I'd be happy to break down my one-light hair-light hack for you! Here's the step-by-step guide:

1. Position the key light at a 45° angle.
2. Place a white bounce board behind the subject's head.
3. Feather the key light so that the spill hits the bounce board.
4. Adjust the position of the bounce board to your liking. The closer it is, the brighter the light will be.
5. If necessary, use a flag to control the spill light.

This technique allows you to create a hair-light effect using just one light source. It's a great way to achieve instant separation without needing any extra lights.

Does that help? Or would you like more details on any of the steps?