Around this time of the year, try using female yelps and calls, to invite some of those burly males around that don't have a mate. Work your distress calls, and definately go with some challenge barks. If you have some pecking orders going through with the nomads of the dog chain, you will be surprised on the success rate of yotes coming in on a challenge bark set. Good luck, and remember, don't miss. Then those yotes will learn your ways.