I received my Cue Training Aid, today. It was around 30 bucks. It's not a glass mirror and it's a little flexible. You don't have to worry about it being too flimsy, yet it has a mirror finish to reflect images pretty well.
I lined up the cue stick and noticed right away that it was quite a bit better than just using a mirror or video camera to figure out my vision center. I immediately noticed the slightest changes in my head position which moved my eyes off of the shot line.
After working with it for about 15 minutes, I could see that this could be a real asset to my game. It showed the slightest change in my alignment and easily picked up any stroke flaws, especially, as it says..."at pace".
I'd give it a big thumbs up :thumbup: for players at every level. It could help any player who thinks they have a straight stroke, find any small flaws. It's simple, yet accurate. Who knew?
Best,
Mike