Easy bank calculator. Practice this for a full day and you'll be able to spot it in no time. #1.) Cast a line to from the object ball to the rail, then to the pocket you want to shoot into. #2.) Cast a line from the object ball to the opposite pocket (from where you want to shoot into) #3.) Find the intersection of the two lines and send it up to the rail. That is your ghost position. If your object ball makes contact with the rail at that point, it will bank into your desired pocket. Remember that harder shots will cut in tighter and softer shots will roll wider. Use a regular medium speed for this.