Hi Leonidas,
Is your dog fixed yet? Sometimes, the dogs calms down after they have been fixed. We had to install an electric fence below our privacy fence, because our pitbull would dig. This helped a lot. Also, maybe you should consider getting another dog as a playmate. We have a 9 year old Weimeriner (very high energy dog), and then our pitbull. They tire each other out by playing all day while we are at work :).
Good luck!
