Yeah, I don't think there's a need for the roll. You just need to make sure you can hold it high enough in the air to shake the thing without letting the bottom rest on the floor.
I just think of it like a really big pillow case. I put the pillow case on inside out so I do the same for the duvet cover.
I don't remember where I picked this up either, but I do remember it caused an ex girlfriend to get irrationally angry and tell me I was doing it wrong... that's when I knew she wasn't a keeper!
As a short person, my strategy is to stand on the bed for extra height for this method. Or just be lazy and accept the slightly uneven distribution, which works itself out after the first night anyway.
I just think of it like a really big pillow case. I put the pillow case on inside out so I do the same for the duvet cover.
I don't remember where I picked this up either, but I do remember it caused an ex girlfriend to get irrationally angry and tell me I was doing it wrong... that's when I knew she wasn't a keeper!