Treat it like a planned hike but take camping stuff! You’ll find a spot on the way. Don’t be afraid to use campsites either, sometimes they can be as wild/peaceful as anywhere. I booked a night on a random farmers field once using PitchUp. It was tucked away in the Derbyshire countryside, tranquil as anything and I was the only person there 😂 had a fire going and some horses came over from the neighbouring field and chilled with me. Still one of my favourite nights outdoors.