I got a tip from another site about a similar idea.
For about $3 you can pick up a boat trailer roller, the one that goes in the middle of the trailer with kind of a V shape in the middle. Cut it in half, and put it over the winch cable.
You can kind of see it in this photo.
photo
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680 Rincon camo, Foreman headlight, xt30, guru bumper
500 Foreman FM green, 2500 warn
Kit Patio Hauler 295F 5th wheel
Ram 3500 Laramie quad 4wd