I agree with letting the mane grow a little bit. Just be careful of doing any one thing too much, you may end up with less mane. Leaving a sleazy (mane tamer) on for too long can cause excessive hair loss of the mane. I had my gelding in a sleazy and a hood last winter to encourage him to drop his coat before the first show, but he ended up with a nice missing chunk of mane. If you leave bands or braids in too long you can also loose some hair. Both my horses have chunks of mane that settle on the opposite side. It is easily fixed for shows with a banding job and a sleazy overnight. Both of them have flat mane at the shows, but at home I tend to let it go and only mess with it for shows.