We don't monitor anything other then our own communications when searching. I carry a FRS radio that has a scan option and keep that running. Thus if you have a FRS radio and I'm looking for you, get on any channel and make a lot of noise, if you are in line of sight and within 2 miles I'd hear you. I haven't heard of other search people doing this though and I don't know if it would ever do any good.
It is a good idea to keep a FRS radio on you, and leave the channel you would use when you got lost with someone.
“Life is tough, but it’s tougher if you’re stupid”
John Wayne as Sergeant John M. Stryker, USMC in “The Sands of Iwo Jima”