The rig your talking about is called a king rig . I don't think he's using thatFishRung,
Do you actually cast the whiting, or do you use one of the rigs that you cast out and then snap the rigged whiting to the line and let him swim out?
(can't remember the name of the rig right now, but I know Breakaway USA makes a clip that lets you do this. It's similar to the anchor rod set up that king fisherman use, but it's only a single rod here)