The Bil Gee form thrusting fingers teaches much more than just the thrusting fingers applications or attacks. The Bil Gee teaches additional footwork, and how to recapture the center line if it is taken from you.
It prepares you for elbow defense and offense by training the rotation of the elbow. It also teaches the student how to rotate his wrist properly in Bil Gee applications so as not to damage your fingers.