My little money maker is under threat

I don't know what's happened at my local arcade, but i've been a regular for many years, timing myself on the machines, scoping drunk players and unloading the tubes on quite a successful basis.

Something has changed in the last six months, there are now sharks in every corner and drunken teens trying to lift the penny falls, I had a good thing going and now my little empire is crumbling.

Because of all this trouble, extra security has been drafted in and now my abilities of taking down fruit machines are under threat.

Does anyone have any experience on trying to deal with rabble and mass scopers when trying to rid an arcade of trash, in order to keep raking the cash.

Thanks Guys