To see how much it's been moved-mount a laser on your scope and zero both at the target distance in zero mirage conditions. Any mirage that moves the image should also move the laser on the way down to the target. The POA/POI should then always be 1/2 way between where the bull looks to be and the laser spot. I like it.13. Originally Posted by Vibe The only way I've figured out to really see how much the mirage is moving the target image is to use the same effect to move another light path. Mirage makes you shoot at the wrong spot by bending the path of the light carrying the image of the target to your scope.