Eifion showed us how to make a sheep imobilizer from a piece of baling twine. You make a loop around the hind legs above the hocks. Bring the ends up between the legs and tie a knot at the upper brisket. Put the head and one front leg through the resulting loop and the sheep is contained safely and cannot get up or run away but is not stressed.
He used this to contain one of 2 sheep he had to shear at one of the other flocks. He didn’t want the one not being shorn to race around and get all upset. This kept her quiet and calm.