Soft rack for carrying two surfboards on the roof of a car. No need for an actual roof rack. You can buy these online from https://perfectwave.com/product/quick-strap-sports-rack-double/ for $65 USD ($93 Canadian). Selling for $30. Warning: I've never actually used these things, but they appear to have been designed for use with surfboards. I don't think they'll work well (if at all) with wide boards like SUPs, windsurfers, and giant longboards.