It depends on the spacing and size of shovel, we run an 11 shank with 4 inch twisted cupped shovels. It takes close to 20 horse per shank. Our 210 horse tractor (dualed, weighted, and front wheel assist) pulls it just fine. We run it 10 inches deep and 6 mile an hour. Speed is a big factor in how good of job you can do as well. Hope this helps! Good luck