There were mammoth individual and team scores in that just completed test, along with regular totals in the 400s and 500s in Australia during the past year.
"Half of these scores were made by an Australian side which, quite frankly, is not that good at batting," wrote Craddock, who believed evidence was "mounting in Hadlee's favour".
"These statistics tell a simple story of decks which weighed too heavily in the batsmen's favour."
Hadlee first publicly stated his ball tampering ideas in a column 20 years ago.
"It is time to legalise ball-tampering in cricket - I can already hear the gasps from the game's conservatives, but I am deadly serious," he wrote.
"But there have been subtle ways over the years of mucking about with the ball that allows it to do things like reverse swing after 40 or 50 overs and takes the batsman by surprise.
"As long as the bowlers or fielders use whatever means they have on their persons, I don't see anything wrong with it. I'm talking about the use of a finger nail to scratch the ball, not bottle tops or those sort of things."