Robbiee....whqt kind of Tail Rotor Failure training have you had?
As long as things are working correctly your notion of "keeping the nose straight" is fine.....when that thing on the tail to malfunction or worse....then it gets a bit more difficult as you should well know by now.
Little simple things like knowing which way the nose of the aircraft moves in reaction to steady collective and throttle movement....or steady Main Rotor RPM but collective movement is also something one should know instinctively too.