try Pelican Point man, cops dont go down there, provided you keep off the streets you will be fine but the only problem is their laying train tracks through there now and i dont know what thats going to do to the trails that are out there. also Pelican Point is nothing like Pt Gawler, Pt. G has tracks and stuff, Pelican point, if you want a track you make it yourself, there are tracks there but their all pretty flat.
Cheers, Tony.