Possible to use only head tracking as input?

Sometimes I'm using ALVR for media players or other applications that don't need hand tracked input and I've had a lot of issues with getting around UIs with the hand tracking. Is it possible to use only the head tracking as input (as in looking towards an item and selecting it) and no hand inputs? I've noticed that disabling controllers and hand tracking in ALVR and launching SteamVR will begin with headtracking but as soon as I use a pinch input or a controller button input SteamVR seems to break and has to be restarted.

Thanks