We used a large wash tub to release one that we caught back in the early 80's. Put it over him and he calmed down real good. Left the trapped paw sticking out under the tub and released it and ran back to the truck. When we left he was still under the tub. We came back about an hour later, he was gone. We tried using a catch pole the first time getting him out. When I finally got the cable around his neck and thought I could choke him down it was like trying to subdue a concrete block with teeth and claws, so we got the tub and it worked real good