First off, most of us would love to have a SECRET SPOT. It may be easier said then done but if you find it possible to contact the owners of the land. Then, get a written permission from them & take the paper when ever you go. So, when the authorities come by you will not get fined. If not, just have a get away plan. }( Besides authorities will only come by if the land belongs to the city or they are called by the owners of the land. Now, that is generally speaking.