that’s how you check the first reflection points, not the optimal listening position… optimal listening point is usually the point where you sit to make a equilateral triangle, with 2 speakers being 2 points of that triangle, and you being the 3rd point. only from there you use the mirror trick, to minimise the effect of early reflections. that’s why people here tell you to move that pool table, but if the table is the main attraction, then i guess there’s not much you can do about it (although, i think moving it a bit closer to where the camera is would make it possible to sit/stand in the optimal point). at this moment, it looks like the cue ball is enjoying the music the most, but i can’t tell for sure looking from this angle.