I agree, it is a little overrated. Still something I liked but not as good as I imagined. I don't have HJs or sex very often but every time I do I remember that they are not as good as I imagine. If it is hard for you to get a grip and her hair is long enough, you can make a tight braid and it gives you a little more grip.
I personally prefer hair play, trying out different hair styles, and scalp massages over HJs.