We used to use terry flats at night (and flannel flats during the day) and we boosted the terry flats with an extra rectangle of double thickness terry fabric which had been sewn together as well as the nylon liner. I recall that system working. My DD was bulky but it didn't matter at night when they don't need mobility. We used Big Fluffies pilchers as well... a few sizes bigger than the rest of her clothes. This was back in 1995. I didn't use MCNs or disposables at all.