Today I setup my RR to do some testing with my superfly. I used two of our fence posts to attach the RR. The posts are about 4 feet roughly. When I got in the RR the first time I had no issues. When I got in the second time the head end spreader bar bent in half and I hit the ground. Fortunately there was some snow and the only thing damaged was my ego. So I am wondering what I did wrong.I am attaching a couple pictures.