No you don't need to use stabilizer on minky. I shouldn't stretch with normal handling. If you are using a large piece for backing it could possibly stretch if pulled too much. I've used it many times with no problems. It does not shrink. I have used 5 inch squares made from leftover trimmings for borders on cotton and flannel quilts. I do wash flannel before using since it can shrink quite a bit. I made a rag quilt for my DD with flannel, cotton and flannel squares. It washes beautifully and is very soft and cozy. I sew an x across each block to hold things in place.