I always say mate, if your going to fish zigs, to get the best out of them; commit to them. All three rods and really work them. Set your alarm for every half hour and change one rod each time it go’s off. Be that colour (not me though), area or depth. That way, each rod is getting 90 minutes but your still actively switching things every 30. You can cover a lot of depth and areas in a day doing this.