www.southenddogtraining.co.uk/free-videos/ sorry awful training advice from this site. Old fashioned and adversive methods including use of prong collars. I would not use any of this on a Mali unless you are bonkers.
I was reading the original Op and then came to
Belgian Mali cross whipet
even a little bit of Mali goes a long way!
Mali are very very clever strong dogs but the good news is that they love to work with people.
I reckon if you do the stop when they pull method you will be doing it until they ar 20! It frustrates the owner and it frustrates the dog and frustration leads to more pulling. Get her to use her brain to walk next to you.
What is her greatest motivator? Food or toys.
If not toys that is something I would work on - if you are able to have controlled tuggy games you will have her eating out of your hand.
Initially I would work on things that seem to be disconnected with her pulling but will make a major difference.
Two things I would work on. One eye contact. Have her in a small boring room at home the minute she looks at your mark (either with a clicker or just a marker work "good") and treat her. Do this a lot in lots of different locations. Build up gradually until she will look at you outside despite distractions.
Her lead does not go on until she looks at you she is not feed unless she looks at you. All good things happen when she looks at you.
Nest would be a nose touch. Hold out your palm and when her nose hits your palm mark and reward. This is great game and she will love it.
When the two tasks above are solid (should take a Mali about 2 days to get that sussed)
Then you can add to the walk, reward when she looks at you when walking, it is hard to pull ahead if she is looking at you. If she does pull ahead put your hand to your side and ask for a nose touch reward.
Mali's are much happier with being given something to do rather than be told not to do something.
Bet she is beautiful -lucky you 