What is the proper technique for executing progressive emergency braking on a motorcycle without ABS?

1. Slam the front brake instantly to full lock, then release the rear brake
2. Apply both brakes simultaneously, squeezing the front brake lever progressively as weight transfers forward while applying steady pressure to the rear brake without locking either wheel
3. Never use the front brake in an emergency
4. Stomp the rear foot brake until the rear tire screeches