I guided crappie fishermen on KY Lake for a decade. We all created our own hotspots. Here's some insights:
Not one guide I knew ever placed anything along the banks. All were more than a cast length from the bank, so the weekend anglers couldn't stumble upon them.
I have more to say, but after a few words, I have all kinds of trouble typing and I can't paste anything. Maybe an administrator can help me?