bad news... skater would totally come and ruin these parks... im sorry but traucers use many of the same things as skaters... rails, walls, etc... they would come and desroy it... anyway of prevention of this?
Skaters wouldnt destroy it. How would grinding a rail destroy it other then putting some color from the board on the rail? Nothing a skater touches is ever " destroyed ". Its simply marked up, which I'm sure a large number of traceurs have marked things up as well.
I really wish people wouldnt stereotype every skater like that. Thats totally wrong and un-called for. And if a skater did decide to go onto a parkour park, why not let him be? Skateboarding is their way of moving from point A to point B.