<human>: So, to help give you a idea, I've included a paint drawn map by my lovely girlfriend.
  
Now we live up in a hill, that overlooks a really sweet area for a cool Fireworks show. Cool, people come up and watch on the hill, but the last few years people have been stepping down on our Property to try and watch it. Especially the white wall that overlooks the Patio area..Few people even tried to go through the Driveway, and down the stairs slightly into the patio area.
  
What ends up happening is my father has to go up and kindly remind people "Private property, please move off it".  
Usually they leave, but I'd rather not deal with the hassle.  
  
So this year, I'd like to try and help cut that down as much as possible without having to go up to ask them to leave, a long with not having to call the police every single time.  
One of my ideas was to put a Trash bin in the driveway area going down to the patio. Plus try to throw up a sign somewhere but I don't know what else to do to help.

Summarize the given text in a few sentences.
<bot>: Busy as hell area, people are dicks, don't want to hassel the police every 5 minutes, how do I discourage people from stepping all over my property?