you'll think differently when you forget they're up there and drive through something with low clearance. hich racks are the way to go, especially on a tall SUV. you wont like getting them up and down. yeah there is a chance of getting rear ended but its very small, and if you do at least their insurance is gonna cover it. if you pull into your garage after a long drive and you forget they are on top, you get to pay for em.