I use a toddler sized cpf. I have a heavy flow, and I have this horrible habit of, wherever the pad is, I will bleed in that cm that the pad is not, if that makes sense. If I am using disposables, I have to use a nighttime one to ensure I dont miss.
So, I have a half a dozen cpfs leftover. I use those. When the flow is ligther, I use eiher an infant dsq, or a fleece liner or a washcloth. The squeam factor is the only thing. I do have to wear a baggie shirt during those days to cover the lines