OK...I have been reading old postings all afternoon, but I still find that I have a few questions....I have a smaller coop...4x4 for four birds. It is the "barn-like" style with the center section being taller and then lower on both sides. The roosting bar is along the center in the middle taller section. I was wanting to use the DLM, but I keep hearing about how easy the poop trays make the clean-up and would love to have them. I just can't think of how I can set them up in my coop. The door is also in the center, so if I put the tray on the floor it would be right in front of the door. I am not sure that I have room for a shelf under the roost. I thought about moving the roost to the side, but it wouldn't be that high off the floor. Any ideas for roosting/poop trays for my style coop? Also, and more importantly....do I really need them if I am using the DLM??