Irishsilkie, a few days ago you asked if golf balls would encourage a broody, then you asked about placing them into a bucket.... and now you are claiming a variety of very odd sounding methods which are 'proven' to work....
I will ask that you provide a list of your sources.
Have you personally used any of these methods?
We try to be as helpful as possible on this thread, but are careful to provide information based on personal experience or well researched materials.
I only tried to hatch some with my bantams but broodyness came naturally to the ones i had. If they all want the same box, try plastic eggs. They really do work. I put an x on mine so i could tell them appart. I also put an x on eggs i wanted to hatch and the hens automatically took turns keeping them warm. One lady i know uses a heat lamp hatchery insted of brood hens but my favorite method was to separate any brood mom with her chicks in a large brood pen, that way i didnt need a heat lamp because she kept them under her. When it was time to integrate them she also protected them from aggressive hens.