I just saw the jimmy tarps is make rain covers that were like 2 ounces. Think he only sales them on eBay, I have one of his traps and it's well made!
Check out his Facebook page jimmy tarps.... It looks like he's selling them via PayPal invoice $29.95
I've never used one either, but a couple of times it sure would of been nice and if I had a blaze orange one, I'd use it wherever there is a firearm season open rain or shine!No problem, let us know what you think of it if you order one!
Thinking about getting one myself but have never used a rain cover so I am not sure I would use it if I got it.
You might check Lukes Ultralight too. 6oz seems a little heavy for a rain cover. I guess it depends on how durable of one you need.