If someone took a band shell in a park and sealed off the front with a wall of some sort so that the chamber inside would be like a quarter of a hollow ball; how would the sound work inside? What would someone experience inside the enclosed band shell if they played a guitar in the center with their back against the wall facing the curved wall? Would the experience be different for a second person standing somewhere else inside the band shell?
There is no danger at all.
I believe lighting rod only works when your side of the fields is attacked by an electric attack.