One suggestion from a lesson learned in high school...if you use plastic covers and if you live in an area where it rains a lot (New Hartford qualifies) and your truck sits outside or is driven in the rain, cut or drill a little hole in the very bottom (where it crooks). Otherwise water will collect and there's no way to get it out unless you remove the hook and let it drain. Not just because of the rust, but in the winter when it freezes, if water is inside it will split the plastic and nature will make the hole for you. Years ago a company made chain covers out of a heavy canvas-like cloth...black and I suspect it was a synthetic material. Those were ideal. They wouldn't harbor water and they followed the bend of the chain nicely.
