One of the challenges I constantly face using draft ponies is finding appropriately sized equipment. Mya is a Shetland-Welsh cross, standing at 11.2 hands. Most manure spreaders are big and heavy and require a team of horses. I needed something small and light and preferably wheeled to minimize impact to the land. My husband and I looked around our budding small farm for something light, wheeled, cheap, and available, and we quickly noticed our Vermont-style garden cart.
After a total of about 3 days of practice with her harness, after which period she was performing nicely, I introduced the dogcart. I had fashioned a homemade lightweight rig from an old bike trailer. I took the bike trailer apart until all I had left were the wheels and the square, lightweight steel frame. I cut a piece of stout wire fencing/paneling and fitted it to the frame. Then I repurposed a pair of aluminum crutches for the shafts (notice that the emphasis is on lightweight).