If your neighbors are bothered by crowing, you may not have many options. A collar can muffle the crow a bit, but it doesn't actually stop him. Likewise, you can lock him up in an insulated coop until 9am, but he will crow from time to time or when there's something that's "off" like a strange sound, predator, visitor, etc. The success of a collar will also depend on the individual roo. My current Orpington is so much quieter & less frequent than my Easter Egger. If roosters are not welcome in your town, then you really must think about how much you're willing to risk to keep him. Your neighbors will know a rooster is living there, but you can make it less of an issue for them. Our neighbors are awesome & very supportive of our little flock and our daughter's 4H projects. Not everyone has easy-going neighbors. Talking with them before there's an issue is a must.