I studied some different designs, and decided to fab up some pinch weld supported rock rails. The angled 90 degree is 14 gauge 1.25 inch, the support arms are 1.25 inch 14 gauge square HREW tubing, and the main rail is 1.5” 14 gauge round HREW. Obviously all mild steel. For what I do, the pinch weld is enough. It is bolted to it with 6, M8x1.25 bolts:
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