I have to agree that taking care of trailer bearings is pretty important. Last year on the way home from the World of Wheels in Boston, I had my car in a dual axle enclosed trailer that had been sitting for months. About 10 minutes from my house I heard a big bang
so we pulled over. we lost an axle so just kind of limped to a friend's towyard that was only about a half mile away, dropped the trailer off and didn't even open it until the next day.
I figured if the car got banged around in the trailer, I didn't even want to see the damage that night. luckily the car was fine.
Needless to say that I'll never make the mistake again