I don't know how it is done in other parts of the country but this happens hundreds of times a season in our part of the world.  Stockers coming off of grazed off wheat.  Usually going straight to a feedyard. 

Set up a portable corrals.  The Wilson style have about 99% of the market around here.  Set it up near a corner of the field.  Hot fence is around the wheat ground.

Uh-oh they are frisky this morning.......

Use a semi or two and a couple pickups to make a "wing" to funnel the cattle into the corrals.  Looks like the Japanese Quarter Horses are warmed up and ready to go.  Time for a rodeo.

Success!  They usually will go around the "wing" and think they are getting away, and run right into the corrals.