I think it would be fun to investigate at Zeppoz. There's a ghost there that I know of four times he's manifested as a shadow figure, and at least three times when he moved something. Granted, those three times were screwing around with Rosie, so I don't know if he's attached to her or not, but that's a lot of energy for a spirit to be using. The problem would be getting in there because Nash totally doesn't believe the place is haunted, no matter what his employees tell him. *sighs*
It would have to be on a major holiday, so to give us the most night, let's say Christmas eve. Yeah, it sucks yeggs, but that's one of the few nights when the place is shut down completely and there wouldn't be anyone around to screw up the investigation. Base station would be in the employee break room, because that's where there's the least activity in the building. I'd suggest X-cameras in the two bathrooms, the bar, behind the lanes pointing at the machine for lane 13, and one outside the surveillance room door. It's a small building, so splitting up wouldn't make much sense. EVPs taken in the areas where there's been ghost sitings.
I don't know if we'd get anything or not, the ghost really doesn't like people in his space, but I have a feeling that Zak would be able to get him to talk. *grins*