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

Sure, I can provide a step-by-step guide to the one-light hair-light hack technique that I've shared:

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 effect.
5. If necessary, use a flag to control the spill light.

This technique allows you to achieve a hair-light effect using just one light source. It's a great way to create separation between the subject and the background without needing extra lights. Remember, practice makes perfect, so don't be afraid to experiment with different setups until you find what works best for you.

Is there anything else you'd like to know about lighting techniques?