I use my alignment sticks so many ways on the turf. I not only use them for alignment but also for ball position and for stance width.
With many of my students I simply wrap coloured electric tape onto their sticks to set consistent stance widths while they practice.
I also use sticks to guide players onto a correct swing path and to encourage a better path direction (see inset photo). There really is no limit to how many ways a small, simple aid like an alignment stick can help you change and improve your swing.