Far as I'm concerned the principal use for sorbothane type isolation product (or any other soft materiels, depending of the frequencies you need to damp) is the need for your component to be isolated by frequencies thru the floors or component supports. This is (IMHO) the exact opposite of the results/requirements of hard, pointy, devices which seem (are alleged) to improve resonance issues by providing a path for vibration drain from the component.
FWIW, all my hard pointy products are used as balast to keep my component chest well anchored to the floor when the system is 'rocking'. :-)
FWIW, all my hard pointy products are used as balast to keep my component chest well anchored to the floor when the system is 'rocking'. :-)