for visual, manual polar alignement with a compass is adequate. For astrophotography with a DSLR you could use the DARV method
https://www.cloudynights.com/article...ert-vice-r2760
With an astro camera (including a guide camera) there are numerous methods for polar alignment including: PHD2 drift alignment, polar drift and static PA and Sharpcap's plate solving method.
All the above have the advantage of not needing to purchase a camera dedicated to polar alignment. In the southern hemisphere especially, the disadvantage of not having a bright human eye visible pole star is countered by the presence of a bright, camera visible polar asterism. So whilst its hard to polar align with a polarscope, it is relatively easy with a camera.