a one point clip is the most easiest way to get ir-tracking.It is just a pitty that you only have 2dof(yaw and pitch).With a 3 point model you can do a lot more.
2dof : Two degrees of freedom [Yaw, Pitch]
6dof : Six degrees of freedom [Yaw, Pitch, Roll, X, Y, Z], only available using 3 or 4 point tracking.
i was just wondering if anyone had tried it
Just try it and let us know if you got it working.
If you have any questions just post them on this forum