Bracken is 14 weeks old and is not to bad on the lead going to the common, pulls slightly, it's on the way back from the walk that's the problem, he tries to pull so hard sniffing the ground as he goes, I know why he probably smells our scent, I have noticed if it's raining I put his coat on, which he sulks a bit and he walks brilliantly on the lead no pulling, but can't put the coat on if it's not raining or the summer, question is, I heard a lot on slip leads and if they will be the answer, to his pulling! can you use them on a puppy! any help or suggestions? I don't like the halties that go over the noses!