Chicken perch with poop board - I finally made one (!!!) and have questions

[FunClucks]

So I've been meaning to do it for a long time, and finally got it finished, and am super excited about it! I've made a new chicken perch for my largest layer coop/covered run. A comfortable occupancy is around 15-20 chickens, so I built for 15 with space to expand to 20. I've added 1" of Zeolite (Sweet PDZ horse stall refresher) to the poop board, and have been scooping the poops out daily with a cat litter scoop. It's working great! Next, I'm trying to build one for my New Hampshire meat bird flock if the weather will hold out.

Questions:

1. Does anyone have suggestions for how to buy or build a better litter scoop? It scoops about 80%+ of the poops, but there are small bits I can't scoop well due to the width of the slots in the kitty litter scoop.
2. Other than going out after dark and relocating birds that are perching on the bottom edge, any suggestions for keeping them from using the edge of the poop board as a perch? I can already tell scooping poops from the floor of the run is going to be a thing and wondering if there's any way to head that off. Only a bird or two is perching on the side of the poop board instead of the top roost, but it's annoying me.

Pics of my built perch attached. Pics of perch in the covered run to follow. The piece of plastic was to keep the rain off while waiting for the old perch to get demolished so I could move the new one into the covered run. It sat outside for a week, and it rained almost every day.

This perch was way over-designed, and was almost too heavy for us to lift. Took 2 adults to move it into the covered run, and lots of stops along the way.

18" was the perfect interior dimensions for the poop board. No poop gets on the wooden sides of the poop board area.

I think the perch is about 6" above the Zeolite. Seems a good height and easy to scoop.

The birds have left it alone all day, they perch there only at night near as I can tell.

I found an egg on the Zeolite when I went out yesterday an hour after sunrise to scoop it. We'll see if someone tries to lay up there, or if it was a one-off.

I used the following materials:

• 8ft x 18" x 1/4"(?) plywood. It was slightly flimsy, had a bit of bend in it as I was moving it about.
• Lots of 8ft 2"x4". I bought maybe 5 and had a fair bit of scrap lying about that I used up.
• One 10ft 2"x4". The 8ft 2"x4" I'd originally planned to use as a perch board was warped in multiple ways so badly I had to use a different piece of lumber. So I used a 10 ft one instead, and figure I'll put another framed out section of poop board under it once I grow out more birds.
• 6 18"x18" peel and stick vinyl floor tiles as the base for the poop board to enable easier scooping. It scored nicely with a box cutter and I could pop it over to break it, similar to laminate flooring.
• Lots of 1"x1" braces beneath the poop board, probably about 4 total across the width of it, and then the plywood had about 1/8" gap at one side once the side 2"x4" pieces were on, so I ran 1"x1" down the length of the poop board on one side underneath everything to keep the Zeolite from spilling out. Caulk would've been quicker and probably easier, but it was too cold and rainy for caulk for most of the time I was building it, and I didn't want the chickens to eat the caulk (main reason).
• Lots of 2" and 2.5" decking screws.
• A 2ft furniture clamp to hold the legs against the cross beams until I could get the screws into them.