For quite a while I'm looking for the mechanical solution, which could help me to rewind the paracord into the spool shape like this:



That is the best way to store it, IMO. I know the spool like that is winded clamped at an angle, but I guess there is an up down motion guide arm of sorts in effect as well. Can't find any schematics or clear image how it's done.

Otherwise I prefer over the elbow, then fold in half, around the middle and through thhe loop method. Makes a very tight bundle, but still prone to entanglement when unwinding...