To be honest usually everyone tries to break them of broodiness not the other way. One way you can try is mark a couple eggs (so you know which they are) use golf balls or crock eggs and see if they'll stay on them, I check for a couple days. Collect eggs store point down cool and dry for up to ten days then sneak eggs in and balls/fake eggs out at night time. The other way is borrow a broody if you can keep it quarentined or have someone's broody set for you. We are in Mendocino Co and have a broody if you like us to hatch for you, I've got a little cochin in full swing.