I have used a similar method that, to me, seems easier. I don't unfold the fabric but leave it folded salvage to salvage. Then I fold it accordian style with one yard or so spacing. I then use 6 to giant pins and pin all layers together on the body of the fabric. The pins are are all over the fabric. Half way through the drying cycle I reposition the pins. I have done it this way for lots of years.