I use a short boat winch strap. You just need enough to get a couple wraps around the drum. I spool out that much winch line. Tape the strap to it and wind it in. I don't unspool the line. Works good. Easy to add and remove.The strap sounds like the best option of all of them. The only issue is, I use my winch as much or more in the winter than I do in the summer. Usually pulling folks out of the snow. So having the strap on is a pain in the ass, as you can't switch it quickly. It's a seasonal thing. Then I use the use of my winch for anything other than plowing, which cannot happen. So a cheap rope or strap is not an option.
(Did I just say the strap on is a pain in the ass?) I need to stop.