I need to upgrade the service for an old manufactured home, built on a couple of large I-beams supported by cinder blocks (about 2' clearance). The meter & disco is on a pole near the front corner of the home and the panel is on the back side of the opposite end. Due to terrain, can't trench around back, must go down front, around the end and back (like the letter 'P'). Would it be acceptable to trench underground to the near corner of the home, then run PVC on the ground under the home to the panel stub?