My 11 week old standard thinks everyone is in love with him and of course they want to pet him. He rushes up to them and jumps on them so they can shower him with affection. He pulls on the leash so bad he makes choking sounds. He is pretty good on the leash when we are in our yard and there are no distractions, but the pulling and rushing when we are out and about is awful. How do I manage this? I am working on having him sit, but I have to hold him in place and he gets very unhappy about that. Plus it seems basically ineffective.