I found the polarscope difficult to use even at a dark site. If i set the Polarscope LED brightness to 2% the faint stars get washed out and if i turn off the LED the asterism guide disappears. Go figure..
I do what Steffan does, do a 2 star alignment and adjust the mount to get close to the first alignment star. I then use the Synscan Polar Align feature to fine tune the mount even more.
For imaging it has to be drift alignment. Look up the DARV method at Cloudynights
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