I have lousy eyesight and a light polluted viewing area. A polar scope was totally useless for me. I invested in a polemaster and even though the images looked good revealing stars on the computer screen that I would have had no chance of seeing properly through a polarscope, my first few tries were unsuccessful as I could not recognise Octans. I wasn't even sure that I was looking at the correct patch of sky.
I was using a compass to roughly orientate the telescope and I decided I needed to more correctly identify true south.
True south is the direction a shadow of a vertical stick will make on the ground at noon. But not just ordinary noon by the clock, there is also a true noon which takes into account difference between your exact location and the meridian on which your time zone is based and also the fluctuations caused by variations in the earths orbit around the sun.
I was able to find a website
www.solar-noon.com that allows you to determine exact true noon for your location taking into account these differences.
Over a number of days I drew the line of the shadow of a vertical rod at true noon. They all lined up pretty well and satisfied with that I scribed that with a sharp tool into the concrete of my driveway where I do my observing.
After that with my first go with the polemaster I was successful in finding Octans. It wasn't all that obvious at first because of orientation issues but after a few more practices, finding the asterisms became easy.
All I have to do now is set up the front leg of the tripod exactly on the scribe line and square up the back legs across the line with the mount in the home position and octans is always there and an easy meat for the Polemaster.