I'm planning on burying some fence along an existing (though somewhat tired) woven wire fence to keep our dog in and keep him from digging under. It's about a ten acre enclosure, so I'm trying the find the best way to trench without spending a lot. Is there a middle buster or subsoiler that would stick out lateral from the hitch to allow trenching close to the fence? Other options? I still am not sure what fencing to use- I have the existing fence so will probably just find some 24" wire and bury one side and attatch the other to the existing fence. Thanks in advance for any thoughts