I used 1/2 dia. aluminum rod. Milled the ends 13.5 degrees parallel, drilled and tapped 10-32 holes in each end. Installed in line with the forward ribs. They at the upper edge of the panel and angle downward to be below my tip up canopy brace (when closed) and screwed to the sub-panel and ribs. Solid at a rock and no problem grabbing the top of the panel when climbing out.