Boxer pushing through mobile home skirting?

My 92 lb boxer has fiugured out that the mobile home skirting is not solid. He will literally "bulldoze" through the skirting and get out. Our cyclone fence does not completely encircle the house because of trees and roots in the way, so we had to start the fence at one end of the mobile home and finish on the other side leaving the very end open with just the skirting in tact. He pushes through the skirting and out through the end that the fence does not cover and when I come home, i see a huge mess. The skirting is all out of the track and pulled away from the house. I need to figure out a way to deter him from getting near the skirting...I have thought about a wireless fence...but from what I have read, it will allow him to access the house area and defeat my purpose. I need help on how or what I can use to keep him from charging the skirting! please help!!!