my 8 yr old bluetick has not been doind a good job hunting this year. when he starts treeing hard, i start walking out to him. I get half way out there and he shuts up. I wait for about 5 mins then walk back to the truck. when I get back he starts treeing again in a different area. Are these coon jumping out of the trees and taking off or what? do coon hounds loose their intrest in hunting?? he was awsome last year. please help!!!