This is a continuation of this post.
After I got the dropping boards hooked up, it came to light they wouldn't work. Not only could I not get the sheets to lie flat, having the gutter in the front meant I would have to lean over a pee soaked gutter every time I needed to reach into a cage. I also found out the hard way that rinsing the boards off always resulted in water (that's what I pretended it was anyway) sailing over the gutter and splashing all over me. I'd suspected it would do that, known better than to set it up like that, but I always do things the hard way.