Just a friendly reminder. If you are needing to repeat your cue over and over, louder and louder, stop and give it some thought.
Are your asking your pet to do something in an environment that has too many other distractions (and competing reinforcers)? Is there something about your body position or the environment that is making your pet uncomfortable? Have you been training too long? Does your pet REALLY know what behavior you intended to teach? These are some of the questions that would be helpful to ask yourself. The answers will give you hints as to what you may want to try differently, to help you AND your pet have success.