Unfortunately, with a dog it is NOT going to be a once off thing. But have patience, good things come to those who wait.
Seriously, there is such a method similar to the above many ppl use when dealing with a dog who lunges on leash etc.
Step forward, dog on left side of you (if right handed, of course) and walk. The moment Dora pulls, lunges, goes in any other direction that causes the leash to go taut and not be slack as it should be, stop in yourr tracks. Do not move, do not speak to her, literallyh be a statue. Do not make eye contact. Once she has returned to your side and is looking up wondering WTH you are doing and why you are stopping, give the command to walk and step off again.
Hell, in 10 minutes you might get 2 metres. LOL! But it can work, and is a great training method for those who have patience and consistency.
I think Hyacinth may have used this form of leash training? Not sure, so forgive me if I'm wrong.