I am always tangling ropes or fighting the rope inside my bag. I remembered using a stuff sack years ago to keep fall-lines in while at construction sites, figured it would work nice for extra ropes, just on a smaller basis. I had some cool camo fabric that was dying to get sewn into something, too.
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I simply insert rope into bag, feeding it in from one end, carefully removing any kinks or twists or knots. Once all the rope is in, I tie the loose end to the drawstring on the stuff sack. Ready to go for the next time, and no tangles. Just untie drawstring and start pulling out rope. I have 100' of paracord in this bag. Keeps rope clean and easy to find in pack. Works with multiple lengths of rope, too. I put a small wrap of electrical tape around each loose end, feed each lentgh in one at a time and then tie off last end to bag.
Rope feeds out with next section being easy to find, just grab the next end with tape on it. Also keeps gear clean if your rope/cord are dirty or wet.
I have also seen this at the docks, sailboat effiecenados are fond of this practice.