chicken enclosure

The chickens on my allotment are in a mobile run that is moved every fortnight onto fresh ground.  It is a fairly big run that is awkward to move.  I was thinking that as summer is coming and as I spend hours up my allotment, whether I should rig up a temporary large run in addition to their existing run, so that they can have more space when I am about.  I was thinking of using chicken wire 1.2m in height.  It does not need to be fox proof as I will be about when they are in it.  It does however need to be tall enough to prevent escapes.  Also, will it be easy to get them back into their normal run before I head home for the day, which is fox proof.  Or should I not bother.  What is your experiences?

Would electric fencing keep them in?

Charlie always used debris netting to stop his hens roaming to far. I whistle for mine  or call their name and shaking a corn pot is very effective. My originals would wander onto peoples plots and scratch in the leaves for bugs.

I have loads of debris netting and canes.  Would be great for an hour or two supervised.  forgot about that stuff.  Thanks.  Will have a go and see if it works.  Will post an update.