I transport mine like OptiMystic says, I use foam blocks (http://www.amazon.com/SportRack-Replacement-18-Inch-Kayak-Block/dp/B00BCLL52I/ref=cm_cr-mr-title) and set the kayak seat-side-up on them. I tie the kayak to the front and back of my car using rope and bowline hitch and a tautline hitch. Then I run seatbelt webbing with a cinch system (basic cinch tiedowns) through the front seat and back seat doors (tie with doors open) to tighten the yak down on the car. Then adjust the tautlines in front and back. Drove 9 hours to Miami like that once, stable as a rock.