Please welcome Eyoyo Underwater Fishing Cameras.https://amzn.to/3siEgXn
My own brain i don't use either simply because ive lived on and fished the same 4 lakes since i was 4 so i got a pretty good idea of where to be and what time to be there without needing a flasher
Dont pin us flasher users down on those who dont know there lakes or how to find fish, a flasher is more then that as it allows you to see and gage the fishes responce or reaction to your technique...it;s not all about finding fish, so even on a lake you know well you may see you are missing some fish you did not even know where there