I have used Duct tape, Mule tape, hobbles, 1/4" rope, and flat parachute cord. They all work if used correctly.
Hobbles are best for long transport or leaving a hog for long time in the woods. They also come off easier when it's time to release a hog. Hobbles are nice unless the hog is too big or too small. The only real draw back is the price. I have lost a several and at $12-15 it strarts adding up. The rope, parachute cord, and flat parachute cord are from my rich uncle.
If the dogs are rolling out or baying more than one hog, I tie one front leg to a tree. Put a double half hitch above the joint, bend the leg, and put a half hitch below the joint. No need to make it overly tight. Tie that to a tree, and go to the next hog. The hog will be standing there when you come back.
