How to coil up an extension or shore power cord!

As a logger almost 30 years ago, I had to coil 3/8" cable in 50' sections. The way to coil it is the same way I coil the 50A cord. It is sort of done with the over under method, but sometimes the loop wants to stay over instead of under. As you are looping the wire, it will want to either go under or over. Don't fight it. Just loop it which ever way it want to go. The pile could be 10 loops over and only 4 loops under. Just go with the flow.