The only thing that I can think of that is quicker than ratchets are bungees. If you can find the proper length heavy black ones, they work great, and don't give as much as the braided cord type. Also, a bungee net is pretty nice, but wont have the weight rating of the heavier black bungees. Or what about these? you just pull through and press to release. But you would want to check the weight rating.