I don't do true fence line weaning. We have pastures on 3 corners of an intersection: central pasture, east 80, west 80. Gates are located on each corner. Calves are worked & loaded in the central pasture then trailered to the west 80. (bred heifers are in the east 80) They can see & hear their mamas from across the road, but I rarely have one get out anymore because I reinforced the corners of the west 80 with cattle panels in addition to barbed wire. The calves will congregate in the corner, but they have to move into the pasture for water and when I feed. The mamas will essentially take turns, congregating in small groups in the other corner. Bawling typically only lasts a few days before the calves start exploring the rest of the pasture.
I check my herd every morning and feed cubes year 'round (but only sporadically in the summer). My calves start eating cubes with they're a few months old, so I don't need to creep feed, and it makes the transition to weaning easier. They're already bunk broke and used to me walking around them (and petting them, hand-feeding cubes).
The actual weaning process is relatively easy and without problems (generally). Seems like if I have a calf or calves that get sick, it's not until about 3 weeks post-weaning. Not sure why. But I always have a couple bunks inside the corral, a few about 20 ft away, so it's convenient if I do need to treat for pneumonia or whatever ails them.