We had some lines set up last year for slalom and polo pitches on the Dodder that got cut down when fishing season started. As it's now getting brighter and slightly warmer it could be worth trying to put them back up again for evening (or other time of the day) sessions.
We could set it up so that we just used ropes and they could be taken down in between sessions to minimize the likelihood of them being cut down.
Fishing season starts on the 17th of March. I think putting the lines up should only take an hour or two. When suits?