Years ago I made one to work with a large garden tractor. They do work for loosening up the top inch or so of the soil but that is it. You're not going to tear up unbroken sod or make your food plot look like a plowed farm field. To do that you need weight, and those small disks need more weight than you can probably pull to make them dig down enough. Lots of repetitive passes. But it's better than a shovel and rake!