You'll never get it wrapped up like new. You can move the cable slowly back and forth side to side to wrap it more evenly though. Do yourself a favor and buy a synthetic rope before the cable starts splintering.
I like attaching to something solid to keep it tight as well, after you clean it.Not really. A good practice is to keep it clean and attach the bike to something solid and put it in N and let the winch pull the bike forward. This keeps it wrapped nice and tight.. As far as the synthetic thing they are nice to have/use but for me till my cable is completely wore out I wont buy one. I dont fix things unless they are broken.. My buddy has had his warn winch on his atv for 8 years and he prob uses it at least 2+ times a month plus for lifting the plow and his cable still looks great.