I have a Yakima round bar rack for my Jetta Sportwagen. I'd like to be able to haul my newer Cannondale road tandem securely, so I've been looking over the options available for mounts. The Yakima Sidewinder looks appealing because I can stick with my standard lock cores. Will the C'dale's fat boom tube fit into the cradle correctly? Should I consider the Thule or Rocky Mounts option instead?