:thumbsup::thumbsup:Got a "free" stud finder once....it was a 12"piece of surgical tube with a rare earth magnet in the end. You let it swing next to the drywall and it would snap to a screw or nail.
Sounds silly but it worked quite well.
Anyway for me thumping works best followed by drilling through with those insulation hangers. They make a nice clean small hole.
insulation hanger works great. they leave very clean small hole.