So basically, you're gonna want to bring everything from the van into a room until you see something in that room. After about 10 minutes if you don't see anything move on to the next room. Repeat this until you find the room where the activity is. If you're playing with others, try staying in the van and letting your team find the room while you play another game to pass the time. After thorough research, I've found this to be the most efficient method of finding the ghost room.

Now that you've found the room, it's time to discover what ghost it is. Use the equipment (or if your using the van strategy, tell your friend to use the equipment) to find out what the ghost is. If you think you've seen activity on any of the devices, be sure to check again at least 10 times to be certain. Once you've done this 3 times you should have the ghost revealed to you in your journal. Now you can leave and put your tray tables in their party positions; so sayeth Captain Koogler!