http://edinburghnews.scotsman.com/topstories/Police-boost-park-patrols-to.6796140.jp
In principle this a 'shame it's necessary, but probably a good thing'.
Though this (Braidburn Valley Park) seems to be a slight overeaction to an odd (probably one-off) event.
It would be nice to think that there might be an increased chance of coming across the odd policeperson (on a bike of course) on the off road network, but...
It would probably be cheaper to have 'parkkeepers', but...
I suppose the Big Soc future is Sustrans ranger vigilanties!