Exactly how I tie. Now if I am by myself, I use a pieces about 6" long & I have it over my wrist. When I leg the hog, I slip the noose end over the back leg, & half hitch the other back leg & tie him off to a tree. Then I get the dogs off & tie up the front end.
A really big hog can break hay string, even doubled.
I tied a big male in the sabine river bottoms by just one hind leg while I rushed around trying to find a mud hole to cool my bulldog off, when I got back to the hog, he had wrapped his leg around the sapling that his leg was tied to. I mean literally wrapped his leg around it. The bones in his leg were mush by the time I got back to him. Wasn't any need to tie him after that, I just cut him loose and let him go. I always tie both back legs now and tie them high enough that the hog can't get any traction, while I tie the dogs back. I can still feel how mushy that ole boy's leg was.