I hadn't heard the term before but get the concept. To an extent I think it's something some people just have. I think do, I simply don't recognise the stuff some people say about street harrassment as something regular, worked in some dodgy areas and never got bothered. I'm not very well at the moment so wouldn't be able to do this kind of trek were there the need for it - but this is the sort of stuff I would do if I could and had to.
Agree that noisy small children may unfortunately make it more difficult.
Flat shoes or boots you can walk /run in easily goes without saying.
Don't carry so much it would slow you down (yeah, awkward.)
Would also avoid bright colours and also dress in ways that are normal for the environment. Full hiking gear on show in the middle of the city perhaps not a good idea. Dressy or fashionable urban stuff in a country lane likewise attracts attention. That bright jacket or rucksack that's good for visibility now might not be the best thing then. Preferably nothing with visible logos of expensive / fashionable brands, including the outdoor gear brands that are in as streetwear, like Helly Hansen. Likewise more feminine colours best avoided IMO. But also full camo or whatever on someone who isn't a tough looking guy will stand out.)
Don't show too much skin.
I'm not massively into this stuff but have seen a few episodes of Doomsday Preppers. There was one where a woman planned to do a long walk to her car and rehearsed it wearing short shorts and a tight vest - okay, the right stuff for keeping cool in the gym - I thought that was a really poor choice for the scenario though. I also think long hair can look grabbable.
That idea of walking in the road or because it's easier to avoid being grabbed - but not right in the middle because then you stand out more. Where you can, balance stuff like that. If you have to cross that big empty car park or field, maybe you just have to, but it will make you more visible.
Have answers ready in case dodgy looking people ask stuff, like directions, or what's happening. Is it the kind of place where a quick, "dunno, sorry", or just saying nothing, whilst keeping walking will do, like in a busy city. Don't engage with people if you can avoid it. In a more sparsely populated area where not knowing where something is may make you sound more vulnerable, perhaps confidently making something up might be better (though in movies that kind of thing doesn't tend to go too well).
This not particularly well-titled summary of studies on body language criminals look for might also be of interest: www.psychologytoday.com/articles/200901/marked-mayhem
But it's not a good idea to be so hung up on acting confident that it dissuades anyone from doing stuff like doubling back, or crossing a road, to get away from dodgy looking people - having the confidence to do that and listen to instincts is really important too.