I recently added the polar alignment scope to my Move Shoot Move kit, in order to get a better polar alignment than is possible with the laser. I also bought the 90 degree elbow adapter so that I wouldn't need to crouch awkwardly while getting my alignment right.
Once I figured out how to mount the polar alignment scope and rotate the reticle to the correct position, polar alignment was simple. Clearer instructions would have been helpful here. With this said, the MSM community is very supportive and helpful, should you have questions.
I would have loved to know:
* Should I get version 'A' or 'B' of the kit? I chose A and it worked, but it was not clear which was best for me?
* How do I properly mount the scope into the mounting bracket? The scope clamps in nicely but I wasn't sure I'd positioned it properly, or pushed it far enough in to the bracket. A picture or two would have helped.
* How do I rotate the reticle to match my polar alignment app? I figured this out i the end, but it took a bit of guesswork.
Having said that, once I had this figured out, my resulting alignment was very good - much better than I achieved with the laser.
One other recommendation - if you have a choice between the 3D printed plastic LED illuminator or a machined metal one, pay extra for metal. It's much more durable, should you accidentally drop the alignment scope (ask me how I know).
All in all, I highly recommend the polar alignment scope.