Just set up my hitting area in the garage and have been hitting balls without the Garmin setup. Unpacked the Approach 10, following all the directions, and it was very easy. When facing the direction of my hitting screen the Approach 10 remains in busy mode. I turn it away and then I get the blinking green light. Took down my hitting screen and relocated (not in desired location), and it works fine. So evidently the signal is being disrupted by the water heater in some way. Anyone had this issue? I would like to go back to my original configuration. Thanks.