I was struggling to coil up a 100' of coax last weekend and remembered reading about the "over & under" method to keep twist out of cables for storage. I quickly looked up and found the article I had book marked about this sure fire coiling technique. (I also found a nice video to demonstrate it; see the link below)
Steps to "over/under" coil your cables:
1: Grab your cable and start with an overhand loop.
2: Flip the cable, and roll it underhand to create the second loop.
3: Repeat overhand and underhand until the cable coils entirely in a circle.
4: Use a velcro tie or cable tie to secure the cable in place
Care should be taken to keep each end on its proper side of the roll when uncoiling otherwise a knot will appear with every other loop. This method works both clockwise and counterclockwise, for both right-handed or left-handed individuals.
Link to a very good video of coiling 100" of coax : https://qrznow.com/quick-tip-coiling-coax/
(Video link from QRZnow.com)