I am so sorry for the long period of nothing and replying so late! I’ve been caught up in AP classes and all, but I want to continue to make time for this blog because I just love my followers and this blog so much <3
Anyways, to answer your question, star maps are very useful for tracking meteors. If you have a star map booklet but don’t want to scribble on the pages, you can make a copy of it or print out a segment of the sky online. Trace all the radiants onto the paper, and the majority appearing to come from Perseus can be assumed to be Perseid meteors, since sporadic meteors tend to have low activity, being few and far between. In the end, it’s all a game of assumption and a sporadic one might fool you into thinking it’s a Perseid meteor.
Hope this helps, and feel free to ask again if I didn’t quite answer you! And thanks for your great question! :)