Do you need to isolate an aluminum radiator?

For a car that will get lots of miles use some sort of rubber isolation for mounting an aluminum radiator. Aluminum has a short fatigue life so keeping the flex down helps it last.
Demon has crossflow with rubber cradle bottom and top. No mounting flanges.
Aspen wagon has side flanges bolted thru core support with rubber washers to isolate it somewhat.
Dont have to do it but for my money I will.
Not cheap to replace an aluminum radiator.