Nesie

I am interested in making some flannel blankets with crocheted edges. (Not fleece)
I checked the archives and didn't see exactly what I was looking for.
For those of you that have made these, did you use two layers of fabric?
Wasn't sure if one layer of flannel would hold up to the skip cutter used to make the holes.
Nothing against using fleece, I just have a it of flannel I want to use up.