That question just sounds so cute: weave ends into WHERE?
I used to worry excessively about this. But now I've got it.
You don't have to weave in a lot, 2 inches or a little more if it's there already is enough. I was always thinking the cut end would pop through to the outer side but if you (well maybe this is in the article at Knitty) don't go in and out to the other side but just catch the yarn on the inside if it pops out of the last stitch it will still be on the inside. Does that make sense to you?
no knots though