Get er dun any way you can. Maybe one of them harbor china tranny jacks ($130) on wheels. Some where near the center of the skid plate drill and tap a 3/8 hole. Drill a clearance hole in the foot of the jack. Finger tight bolt the plate to the jack. Roll the assembly under the rig. Use a 3/8 up to 1/2 converter attached to your air ratchet/drill-driver and hoist the plate in place.

