If you can drive stakes into harder dirt, use a regular hammer. This thing just bounces off the stakes instead of driving them in. And if you need to get them out of tougher dirt, pry them back up with a regular hammer and tap back and forth a bit to loosen and get them. When he tried to use it, the hook stretched almost to a straight position, he couldn't. Tried and didn't work in this situation with harder dirt. Although most likely it will work in soft mud.