not really sure your setup .. i'll tell you what can come in handy around a coop though is simple pavers like the cheap 2' squares you can find anywhere.. maybe put some kind of raked up litter or otherwise in there and toss in some pavers on top to make a walkway or whatever seems logical to your layout .. im sure hosing or shoveling them off would be a daily part of the scheme but it would at least keep some islands in the mud so to speak ...