Originally Posted by EastlakeRoo
I can see that this will eliminate the horizontal movement but would it stop the up and down movement.
It stops all movement both side to side and up & down. If it does happen to come loose again, you simply loosen the locknut and tighten the bolt and set the lock nut again. Very simple, cheap and beats anything you can buy. Have used this method for over 35 yrs on at least 7 different tow vehicles and all sorts of trailers from utility trailers, race car trailers and rv trailers.