Wow, this thread is really helpful. I am just getting started and am working on my howling every day (mainly in my truck on the way to and from work so far).
I have one question, for the interogation or locator howl the Randy Anderson cd that came with my calls said to move your teeth from the deep part of the call to about half way down then back about half way again. Is holding a constant pitch better?
Also, I live and hunt in Iowa, does howling really not work well here?