Welded a frame at the stub spacing (in this instance 17" overall) with 1" square tubing. Made the height of the back 55" with a 6" wide shelf at 9" down from the top. The size from table to shelf is 24" x 24". The final steps were staining and clear coat. I lag it to the wall and covered the lags with 1" plugs.
Read Game Room Pallet Wall Mounted Tables by JoeJones on 1001 Pallets!