Let be the first to say that you don't have to have a perfect bugle for it to be affective. Some of the worst bugles I ever heard were from bulls. In fact, if I hear a "classic" bugle, I almost always think it might be a hunter. For people who have heard alot of bugeling, they know that elk sound different. If you hunt an area long enough, you will even reconize bugles from various bulls. If I were you, I would focus on what to say, and when to say it, as opposed to trying to sound perfect.