Corral cleaning is like leaf collection: You first have to gather the pieces into piles then transfer them into a container for removal.
The typical manure rake, on the right in the photos below, is made of plastic. It’s designed for scooping not raking. When you flip it over and use it as a rake, the tines break off, usually in the middle. It’s a productivity killer.
Home Depot has a True Temper leaf rake made of metal that works great for gathering the poop into piles. Only complaint is that the handle is a little short and made of metal. In the winter it will pull the heat out of your hands if you’re not wearing gloves.
Price is $16. It’s better and faster than a manure rake for horse poop roundups.