Actually one of those latches can fail . . . and it did happen to us on our way back from AZ, 3 years ago. The curb side, front shell latch center pin weld broke. The shell did not fly into the air as there are several other tie down points, as noted by Wayne. The front shell moved up 4 or 5 inches when the latch let go. I am sure that corner of the front shell was doing some bouncing as we drove down the highway. On the positive side - there was no damage to the unit. I was able to use a bungee cord to secure the latch until our return home, which fortunately was only a days ride. Our local TM dealer had a replacement latch and sent it right out. I still have the old latch. It was easy to drill out the rest of the center pin and substitute a bolt and washer, nut arrangement to render the latch functional . . . for emergency use.
This thread has more useful information
http://www.trailmanorowners.com/foru...ght=hold+latch
Dick