I dont.
We have a PROW that runs from the road to a green lane. It's actual marked position runs up the side of a couple of fields, across a ditch that no one maintains and straight across a field of crops. It is dutifully sprayed off every year by the landowner, resulting in a dull path of either pure mud or hard baked clay between walls of wheat or rape. ..
No one uses it. They use the farm track that parallels it which gets mown for tractor access and so on, is equipped with bridges over the distches and is in every way a better path.
"Why, I asked the now deceased landowner, "do you not simply change it?"
"Cost, and the thought of the Ramblers association descending on the whole thing and endlessly arguing trivia. I don't mind people walking on the tracks. and it costs me little to spray the 'real' path off to keep them happy. Let sleeping dogs lie".
Needless to say the actual path has a little ugly plastic yellow sign at each end marking it out.
Had a similar experience some years ago , looking for a scenic walk. Ended up following a map to what appeared to be someone's back garden. Someone was in it, so we asked them.
"Are you from the Ramblers Association?"
"No, just looking for the footpath that goes up here" I said, indicating the map "Lord, no ones used that in 20 years..if you want to get there, follow that track there, and walk up the field on the left. It joins the old path up there and is a much nicer walk and all the dog walkers use it"
The problem is of course that the Ramblers association want things the way they were 100 years ago. I lived on the Fens. They are criss crossed with old rights of way. But no one lives there, so they are in longer in use.
A friend an I followed one, out of sheer curiosity. It led to a derelict house, that was frankly so dangerous we didn't do more than look inside.
My landlord at the time who had lived there 60 years or more, was amused "Those paths existed about WWI time, but no one lives there any more. We had about 1500 people living on the Fen then, 6 pubs and two churches. Now there's about 40 of us.There's derelict places everywhere. Mostly under mounds of earth. They just fell down when their owners died. No one wanted em. No water, no electricity. Just old cottages".
What is needed is a simple process to exchange old ways for new, in line with usage and the way things are today.
Rights to roam are a total nuisance in agricultural land, as people seem to think they can wander anywhere with no heed for the actual land use.
Indeed, they are in hill walking terms - a total ecological disaster with tracks being worn away through the constant use they get. And needing to be returned almost onto tarmac footpaths.
It is right that walkways should exist, and under statutory law too, but it is not right that either unrestricted access or inappropriate routes be left just because they were once valid routes that long dead people followed.
Meanwhile we have the stupidity of councils signposting the things up, that are simply not in use, while the regular real walkways are at risk, because they exist only be the grace and favour of the landowners. And are further put at risk by itinerant travellers, who, if the tracks are not gated off, will park up and camp for as long as they can stand the tip of rubbish they leave behind.
To be cleared at the landowners expense.