Me and some guys play out over here in Western Branch near the Maersk Distribution Center on the weekends. We have a home made speedball course with 6-7 bunkers (wood pallets, construction barrels, refrigerator doors, etc) on each side.

I honestly don't know how legal it is, but Maersk has never bothered us and the only time they ever said anything to us is when we parked in one of their parking lots one time.