I'm looking for a bit of advice. We still have work to do but Winnie has come on really well with her leash walking and doesn't pull anywhere near as much as she used to. We have been working on the stop start method and she seems to be getting it. She used to lunge at everyone going past but now she hardly does it and will walk past people quite normally. I knew when she was going to lunge as I could see it coming as someone approached and could prepare for it and she would get rewarded for not doing it. But now she has taken to lunging only occasionally at someone when they have gone past already so she is mostly lunging at the back of their feet. I don't even know when she is going to do it. She walks normally and then goes for it. It's not everyone or every time. Just now and then so I can't predict when she will do it. I do try to keep myself between her and people passing but she will cut straight across me. How do I stop her doing this? Also she seems more interested in who or what is behind us most of the time. As soon as she becomes aware that someone is coming up behind us or if there are children she doesn't want to walk forwards anymore and wants to see everything behind us.