Hi @DislocatedShoulder
Sorry you're struggling with a pulling dog, I sympathise.
I see you've been offered loads of advice already, so what I say may not be relevant, but I've recently cracked loose lead walking after months of struggling with an adolescent bitch pulling me off my feet and I can now enjoy leisurely walks with a non pulling dog.
Possibly it counts for nought here, as mine isn't a gundog breed, but anyhow I'll offer my two penn'orth on lead training if nobody minds.
This time last year I called in a trainer because I was finding my girl impossible to walk, she was pulling me all over the place and I was in despair of her ever walking nicely. The trainer wanted me to put her in a figure of 8 headcollar but I wasn't willing. He was averse to the idea of a harness on the grounds of her being too strong. After three sessions nothing was working, so I ditched the trainer and went right back to basics, using vocal commands instead of food. She was 9 months at that point.
I decided to try a harness, although my partner was against the idea. He was walking her on a conventional collar and lead but I was struggling to control her on it. I'm not very big so I thought that a harness would at least give me something to hang onto and stop her pulling me over. So I bought an Ezydog harness. It was all trial and error and weeks of frustration but slowly she started to respond more to physical and verbal correction. Then she grew out of the harness so I had to look for a bigger one... A Haqihana hound harness has turned out to be the answer to all my prayers. The lead attachment is on the top of the back and I'm using it with an EzyDog Checkmate martingale collar with an 8 foot double ended training lead attached to both.
I did try a belt attachment but it gave me severe back pain. That's not to say it won't work for you though. It can depend on the strength of your dog.
Initially I was grabbing onto the back strap of the harness to stop her pulling, but we persevered and within a few weeks of getting used to this combination she was loose lead walking nicely, pulling a lot less and being less nervous on pavement walks. I have her positioned with her shoulder level with my hip, her head slightly in front of me, because this feels like the most natural position for me.
It isn't easy training loose lead, it needs a lot of perseverance but I honestly thought she would never stop pulling and I was reaching the point where I was scared to walk her by myself. She is now unrecognisable from the dog I was walking at the start of the year and I'm really proud of how far we've come.
It can be done. It takes patience but once you find the right set up for your dog, it makes a massive difference.
.