Re: would the rope of dope worked against...
to be blunt: he didn't need to against liston, he still had his legs
he took horrific punishment from foreman on those ropes. it was a great strategy that was really designed to capitalize on george's looping shots and work around ali's limited movement. by 1974, he was not the fleet footed dynamo of the 60s and needed another strategy.
as to whether it would work, liston was a much more accurate puncher who relied on his jab far more than foreman did in his first career. if it worked, it certainly wouldn't have worked as well