Slim Peterson wrote the book on predator trapping problems and solutions. I bought it back in the mid to late 80's. In the late 90's I was moving and needed to lighten my load so I foolishly through out all my trapping books thinking, I'll just keep all that information in my head". When I turned 55 all that information in my head was erased. I had to start over it seemed. I remember one thing... set near the avoided set by a small white bone, tuff of grass/post. Put a couple three drops of pee on it. set blind between two objects the yote might walk between when coming and going to the set area.