i dont do it all the time but its worked great for me...ive got alot of bulls fired up with it and running in to it...i mix things up if the normal calling isnt working....you never know what these elk will respond to
Interesting to see that I'm not the only one the warbles the cow call sometimes, though I don't get as aggressive with it as you were. I usually mix it with pleading estrus mews. I've never seen it make them run, and sometimes its like candy.