Motion Track With One Camera, When Markers Become Covered

Here is the scenario: You are using After Effects to track motion for mocap. When you actor moves, arms and legs become obscured by other arms and legs. This tutorial shows how to smooth out the work flow for tracking this kind of movement. Your actor can move more freely when you don't have to worry so much about markers going out of view. This is for the one camera motion capture.

Are you doing motion capture similar to this? Let me know.