It was fun and fast to do, and what I really like about it, a stitch once made can't be removed, not like knitting or crochet.
The wool I used was not the best choice, almost no twine in it. and the friction of pulling it through the stitches caused it to split easily, I did a lot of felting ends together! That was no trouble at all, with this wool.
The needle won't be staying in the hat, I will be using it for other projects.