Isn't the answer, as in so many things in life, to work with the spotters, rather than against?
I would work with the authorities towards setting up a proper safe demarcated area, charge a nominal fee (50p) for using it, which would cover refuse collection, and make more money from a refreshment facility. If you make people feel useful and wanted (Luton - last post) they will usually respond positively.
Last edited by Tableview; 9th Sep 2012 at 16:36.