I am installing nickel pickup covers and don't want to solder them. I am entertaining the idea of hot gluing them. Do they need to be soldered? Has anyone tried gluing them and does not grounding them make any difference?
In theory, they might still ground themselves by coming in physical contact with the baseplate even if not soldered. Not an ideal ground though and you run the risk of noise.
I rarely re-solder covers on; usually the wax holds them well enough. Don't have any issues with noise or microphonics. If you play really loud, it could pop up though.