To use it, I put our Shetland pony on the cart. The pony enters from the rear gate, and the pony is tied to the frame so it stays on the cart. The rear gate is closed and latched once the pony is inside. Then simply push the cart around your lawn while the pony eats the grass. That's all there is to it. It works great.
Optional - place a container behind the pony to catch the poop. This poop can be used to fertilize the lawn when you're finished. Without this container, the poop will build up on the mower deck, requiring you to scoop it up with a manure fork. Newspaper or a piece of a tarp on the deck works as well. (Dont forget to give your pony some water every few hours. They wont eat (mow) if they are thirsty.
Note: If you dont have a pony, you can also use a goat, llama, alpaca, or even a large horse, but a horse will require a much stronger deck, strong wheels, and they are heavy and hard to push around. Therefore, a pony, miniature horse, or goat is preferred.
This is the REAL "Wheel Horse"!