I used to fenceline. But now that I'm setup to use these paddles its amazing the difference. Not a peep out of the calves, no pacing, no time off feed - they just stand there and eat and lay there and sleep. Out of a group- some that have been weaned a while, and others that I just took the paddles off of, You wouldn't be able to pick out which is which.
Only the cows cause a little bit of stir looking for their calves, but that only last a day and not very intensely, no real bawling from them, mostly just roaming. I move cows about 1km away, after having the paddles on 4 or 5 days.