Drill a hole through the center of the 51-inch boards. The hole on each board should be 25 ½ inches away from each end and 1 ¾ inches away from each edge.
Position one 51-inch board next to another so the holes on each board are aligned. Place a bolt through the hole so there is a washer at each end of the bolt. Tighten the nut around the bolt with the wrench and repeat this process so you have two pairs of boards with a bolt through each pair.
Lay the pairs of boards flat, parallel and 29 inches apart. Lay a 36-inch board perpendicularly across the boards so its ends are flush with the outside edges of the two inside 51-inch boards, and so it is 1 inch below the bolts. Screw the board down using two screws for each end.
Screw another 36-inch board to the same 51-inch boards, so it is aligned with the first 36-inch board and its ends are flush with the ends of the 51-inch boards. It should be 17 inches away from the first 36-inch board.
Turn the the boards over so the 51-inch boards are on top of the 36-inch boards. Screw two 43-inch boards to the pairs of 51-inch boards so there is a 43-inch board directly above each 36-inch board. The ends of the 43-inch boards should be flush with the outside edges of the two outside 51-inch boards.
Screw an eye-hook to the 18-inch center of the 36-inch board that is flush with the ends of the 51-inch boards. It should be 2 ¾ inches away from each edge and facing the 43-inch board. Screw the second eye-hook to the 43-inch board so both of them are facing each other and aligned.
Stand the stand upright so it is standing on the ends of the 51-inch boards and resting on the edges of the 2-y-6-inch boards. Spread the stand open using the bolts as a hinge at a 70-degree angle. Tie the rope around the eye-hooks so the stand cannot open any further than 70 degrees. Fold the stand back together when it's not in use.