Finally something I know a little about..yahooo
Tim not to insult you, but are you sure it was C that made the kills? Generaly "farm dogs" that are left free roaming, will cause more damage to wildlife than C will. C are usually seen around kills and are often blamed. That said, if they are after your live stock, the best thing you can do is contact your County Commissioner and find out about getting a county or state trapper in there, they will use cyanide bait stations, snares ,leghold traps and are very adapt at catching yotes. Reason..yotes are probably smarter than most people you will meet as far as survival goes and are extremely intelligent and adapt very fast to attempts to get them, say you call one in and miss the shot, odds are he won't come to another call, or if he does you won't see him. I would try a trapper since you have $$ at stake, a good trapper that will take care of business. Great P dogs are better than a donkey IMO if you go that route. I have taken around a 1,000 yotes and they can be a PIB. I bet you have one yote that will teach it's off spring that your goats are easy.
Good Luck