The noisy part isn't a big issue if they're on a trailer --- that's behind you. But it would be annoying if they were on a vehicle. I would always be checking to see what's wrong.
And barely working to wheel lockup is an issue between a loaded and unloaded trailer. The controller needs to be adjusted to match the load.


Kevin
1951 Chevy 3100 work truck
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1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car)
Busting rust since the mid-60's
If you're smart enough to take it apart, you darn well better be smart enough to put it back together.