I remember on my truck, (It had been passed down from my dad almost 50 years ago) he had cut heater hose into probably 1 inch sections and spaced them evenly down the chain. That stopped the rattle and also let the chain hang more freely. He also always started the hook in from the underside and then spun it around to where the long straight part was through the hole. The hook hung straight down and was less likely to rattle. I miss those little bits of wisdom when they popped up.
