Anti pulling harness

[Excitedannie]

Unfortunately I think I have to resort to ones. I've tried everything - all training methods and her sniffy nose and general interest in everything other than me or food means she's more interested in following the smell or getting to somewhere faster

It wouldn't be for all the time but I just wanted your experience. I borrowed a friends Halti and it kept riding up to her eyes even though it was supposedly the right size

Any recommendations?

Get the body harness where the lead attaches at the front on their chest.

When you say you have tried everything that could be part of the issue. You need to choose 1 method and stick to it, it can take months to undo pulling once it has become a habit.
Have you taught dog where heel is? Can it heel without a lead? If not then these are your starting points. You make heel the most rewarding place to be.