In reply to beychae:
> [Lack of middle mark] annoys me with the double rope because you can't easily coil it starting from the middle, meaning you can't then tie the rope to your back.
You don't need the middle. Start coiling by putting both ends together and then feeding 2-3 arm-span's worth onto the ground. Then coil as usual. When done, use the portion originally dumped to do up the rope for carrying on your back. See for example .
For another approach that is fast in spite of not coiling double and will feed better without restacking, consider
http://www.youtube.com/watch?feature=player_embedded&v=WfvioMwTVUo .