Please supply the wisdom to stop ddog doing this 
He is a 1 year old show cocker. I am alternating between a no pull harness - he got used to it. And a half choker collar - dp idea and he just pulls and pants with it on. It's slightly better than the harness.
As long as I practise with treats regularly he is pretty good with other command and recall and he's so harmless but this constant lead yanking is driving me nuts - I don't understand how to reduce it as my previous dog (c docile greyhound) didn't pull at all it's a new problem to me!?
Please help x