Definately if you have a variety of different types of cubes this does help, in fact thats how the cubing technique evolved when the netters draged in there nets they seen the yellowfin feeding on the different types of fish falling out of the nets and when the nets were being sorted the by catch being thrown over the side. Another good technique I feel can make the difference is cube at the same rate and then every half hour or so stop the cubing only for a minute or so or depending how the current is racing and the intervals you have been cubing, and what this does, it makes the shy fish that may be hanging down the back of the trail out of range of your baits, become confused in what has happened to the steady food source and usually with there predatory habit they will proceed a lot faster up the trail to investigate. Like Warnie does we use the trap and other species of fish for cubing and WA for our baits. The day before we head out we take out our cubes and baits and let thaw overnight.
Cheers Dennis