Heh, would you have been driving into the sand bar w/o lockers? 
Perhaps sans lockers keeps people out of trouble. 
Perhaps sans lockers keeps people out of trouble. No one has mentioned the benefit of a FF RR Locked 80 in the sticky stuff. When in mud, more traction is just about always better.
Granted, they did me no good on this Mississippi river sandbar that almost ate my truck (with the river rising).
