I'm planning on using U-bolts as spreader bars for a couple of my end channel hammock in the near future. Weight isn't a problem as they are yard dwellers, but I'm not sure if I should go with the 4 or 5 inch U-blots. The reason is that they don't seem to make metal plates that go between the ends in sizes over 4".
So, if I don't have a plate there is a possibility that the U-bold could be pulled partially closed by the forces on the eye nuts that will have amsteel going to a ring buckle set up. Ultimately there are two questions. Will the forces described above do much to a 1/2" steel U-bolt? And secondly, would it really matter if it did?