I used two of those and 2 1" quick fists and some 1/4" alum plate. I kinda wanted it to be quick disconnect, but didn't exactly turn out quick. The clearance is pretty close to the roof line so I might put a strip of the clear bra vynl stuff. Overall I'm happy how it turned out. I also had a omg wtf moment after I mounted it.........about a year ago I started pulling my rockers to trim and make sliders. First removal I lost one stainless screw the holds it on, searched the gravel for hours! Well last few days it's been raining cats and cats, just enough to expose that lil guy!!! Sunday win!