"Rotation-only" tracking?

Hey all! So I recently upgraded my current project to the native Unity 5 VR setup and brought in the new Oculus Utilites, hoping to be able completely ignore the head model position tracking and only use rotation. I've got my own positional tracking system and the head model is throwing everything off. I just can't figure out how to shut off the head model tracking and use rotation only. I read through the docs but all I found was:

Use Position Tracking

Disables the IR tracker and causes head position to be inferred from the current rotation using the head model. To fully ignore tracking or otherwise modify tracking behavior, see OVRCameraRig.UpdatedAnchors above

and

Updated Anchors

Allows clients to filter the poses set by tracking. Used to modify or ignore positional tracking.

I am assuming I'm just missing something pretty simple, but right now I'm completely clueless on how to use UpadatedAnchors to actually do anything.
Thanks!