Brock and Tom are spot on. this is 100% jealousy and possessiveness. Lefty isn't all bad all the time, and he will hunt better by himself. some days he'll hunt just fine right along with Slick. there does not seem to be any pattern to this behavior, or misbehavior especially, other than that I can count on it to occur more often than not. I won't let Lefty cause problems on a tree. Slick is still learning and deserves better. I physically intervene by whatever means necessary when I get to the tree. I don't fool around with commands or electricity when in comes to that. It's my experience, and strong opinion, that I have to be the alpha dog at all times, especially when they are on a tree and hyper excited. We still have fun, but it gets frustrating some days. Slick and I go without Lefty today after I get done getting some things in order in the deer woods for this weekend.