Now, poly glue some 1/8 ply to the rear of the wing, approximatley 1- 1 1/2 inches from the trailing edge. Make sure you clamp or tape this plate to the coro, or the poly glue will lift it away as it cures. This is your rear wing bolt plates. You will still need a ply plate or fender washers on the outside of the wing, but this interior plate stiffens it up considerably.