I use a full size cotton towel, dry a short, mid heat cycle and remove promptly. I have very little problem with wrinkles. I pretty much prewash everything too.
I figure the towel absorbs some of the moisture and helps keep the humidity up during the drying process. I do not wash the towel - I leave it in the dryer.
i just got back from vacation, and hit many fabric stores. Washed it all and had enough to overfill a large laundry basket after it was folded. Had pieces from 4 yards down to layer cakes, and I sort and wash by color. Took most of a day to get through it all.
BTW - I did experiment once and left the towel out - and had lots of wrinkles. I rewashed and dried with the towel, and ended up with very few wrinkles. Every once in a while I do forget to toss in the towel, and I know it as soon as I start pulling the dried fabric out of the dryer. It is way easier to rewet and dry with the towel than to iron.