Bluedogsonly on byc member list is the vet in Oklahoma who does the surgery. He is the expert. Search his member name or decrowing roosters to find. I don't know how to do a link.
I am intrigued by the throat muffler idea but hope to have no more roos . I will follow this thread!
I got my favorite little guy decrowed surgically. He is soft sounding enough to stay under the radar of code Nazis. Dr James has a thread on BYC about the procedure.