So if the camera stays in one place and pans, the delay tracker tripod head works great.
If the camera is dollying, then it's better to use the bone object attached to the actor, as the camera will be dragged behind the tripod movement and end up looking the wrong direction. You can compensate a bit with a stiffer spring.

This scene is what I wanted a more stable fluid motion to the camera.
The camera should follow the character but not laser aimed but subtle following of a character jumping in place.
I tried initially to attach the camera to a spring of a prop and have the prop look at the the avatar method.
But when the motion is too dynamic at any spring setting it didn't provide any significant difference to the camera's view.
So I tried the other method of putting the camera on look at to a prop ball attached to a spring of another prop that is attached to the character's hip. 
For a quickly moving character this works better. 

Is there a spring setting I am missing somewhere?  I have tried all of the suggestions in this thread, but the spring item stays rigid in every playback (even downloaded Rampa's spring...)

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The last bottom part of the Modify panel has all the spring setting check those settings.