I drew a picture of the birds eye view of my house; it's not to scale but captures the general layout: I'd like to have the coop about where the slab is, so should I use it to separate the water from the dirt, hopefully cutting down on the mud, or should I have it flush with the fence, so less mud overall gets tracked inside (by putting the entrance ramp as far away from the water as possible?) Currently the fence and deck are joined at the low tide waterline with a wooden lattice, with about 3"x3" holes (I think it's http://www.homedepot.com/webapp/wcs...&productId=202297463&R=202297463#.UN2gGHfyRiM) - do I need to cover it up with something smaller? Currently there are swarms of minnows that pass through, especially at high tide, which I'm sure the ducks will love, but I don't want one to get it's head stuck underwater. Has anyone used Tenax for flooring (http://www.homedepot.com/buy/tenax-3-ft-x-15-ft-black-hardware-net-751397.html#.UN2hK3fyRiM)? I'm thinking that I could put that as the flooring, then have a sheet of plywood about 2 inches underneath it, angled downwards so I could just spray the poop down and out. Rust is a huge problem, so avoiding metal would be a big plus too! If I make the width of the house about 3 feet, with 1 foot of walkway and 2 feet of nests, so that I could reach over the walkway to remove eggs, will the birds poop on the walkway or not really care? I'd only have one nest per bird, so hopefully they all be occupied when the birds were locked up. It would also mean that I could add on more length along the fence line if I wanted more birds. One last question - how tall should the coop be? I'm guessing 3-4 feet minimum, is more better? Thanks for all the help!