Troy, I try to coach using a traffic light system - a ‘red’ ruck is slow ball, behind the gain line, D organised so pod lies close to 9, close together and aim is to generate momentum - conversely a ‘green’ ruck is fast ball over gain line where we will look to play a bit wider and less structured - the ‘amber’ rucks lie between these and is where we need to disorganise the D with tip-ins/ons/backs - key is always to have enough depth to execute. Hope that helps a bit.