I have another neighbor down the road that has a rooster and he usually gets mine going. He is so loud that his crow echoes all around. Do you use one of these rooster collars? Is it based on the same principle that a dog choke collar works?
Check this out - seems humane and will quite a boy down to the decibel level of a hen:
http://www.mypetchicken.com/catalog/chickens/No-Crow-Rooster-Collar-p1580.aspx