TexasJim50, That is so funny for I was just getting ready to post a similar reply. Been using bicycle innertube for my truck's chain for years. No matter what material one picks to use, I would add a small hole at the bottom of the chain loop so if rain water or hose water enters the cover, the small hole will allow the water to escape preventing the chain from rusting away.
Here’s my inner tube chain protector…….Hmmmm looks like I need to slide the tube up towards the bed frame end of the chain, away from the tailgate hook.
Craig
My '50 Chevy 3100 5 window, '62-235cu, 3:55 rear My truck ....... Respect The Rust If I'm not working on my truck, '65 m00stang or VW camper, I'm fishing with the wife or smoking Salmon.