This looks-like model explores an alternate design to the target. Instead of a flipping cutout, the target is an actual bottle which uses illumination to indicate whether it is in play or not.
For the target size, we considered the size of the bottle and also the size of the target on the bottle itself.
We also wanted to explore the "lighting up" aspect of the target. One option was to light up the area around the bottle or illumiate the bottle with a singlular LED (above). However, both these options had limited "brightness" visibility so we ultimately decided that we wanted to illuminate the entire bottle (below).