In maneuvering the rear causes no dive in a tight parking lot , and will allow a tighter turning radius. You can stay on the throttle to prevent loss of gyro forces , but use the rear to bring you around tighter .
Rear is very good in cases of lose gravel areas. A rear tire slide is predictable , and controllable while a front slide is not .
Rear brake for trail braking @ high speeds after using front to bring down a larger portion of speed .
In some of my fast videos like Push Mountain 341 in Arkansas I'm using the rear brake .
On my ZRX , ZX11 , and FJR1300 I've worn out the rear pads before my fronts .
Here is a link to my Favorite rider / author = Nick Ienatsch
Trail Braking: On the track to win, on the street to survive | N2 Track Days