1/2" x 10' IMC (rigid) conduit at Home Depot = $13.59 including two cuts to a 70 1/4" length. Results = Priceless.
Will extend the rod from the driver's side at the campsite because this side would get in the way of the visor. Nice snug fit and will not shift in the Yakima tube during travel.
2016 Outback 320 with a 2010 Ford Expedition.