Greg Bernetic,
I am not familiar with the howler that you are using. If it is ear popping loud and sounds somewhat like a coyote, you should do just fine. My howlers are good but they ain't magic. There are times when extra loud howls are really needed. I was hunting with Scott Huber one very windy South Dakota day a few years back. Scott howled with an Austin Howler on one stand with no vocal response. He then stuck the Austin inside of a buffalo horn and howled again, this time we got immediate vocal response from 1/4 mile or so away. That coyote had not heard the first howls. Without the extra volume the buffalo horn gave, we never would have killed that calf eater.