Hummm, I don't know about this thread. Not going thru your brood chamber ever?? Never heard of that management technique. I go thru my boxes in the spring to check for overall health, swarm cells, brood patterns, honey and pollen stores, signs of pests and disease etc.....can't see that from on top. I also find my queen in a hive before I pull frames for nucs and she usually ends up on one of the last frames bottom box... :) As far as pulling boxes, I throw my cover upsidedown on the ground and set my box on it at an angle, sometimes I will cover it back up with the inner cover to keep the girls calm and out of direct sunlight. I don't know I think I am in a bit of shock here....