I just received one 2 weeks ago from 3 Rivers Archery, and I'm still doing the drills as instructed so I haven't actually shot an arrow since using it.
My initial impression is that the shot trainer will be very helpful.
But there are 2 things that they don't mention in the instructions, though.
The 1st thing is that the bow can be drawn without gripping the string at all...don't even touch it. This will help in strengthening and training to use only the back muscles for drawing.
The 2nd thing that I think would be helpful to some people is to use it with a clicker. Hey, if you're going to use the thing to ingrain muscle memory for a proper release and follow-through, why not practice a consistent DRAW LENGTH at the same time? Draw length is the one aspect of training that the shot trainer doesn't specifically address. Even with the shot trainer, inconsistent draw lengths could be practiced. Using it with a clicker would address that.
Whether or not you use a clicker, the shot trainer should help with problems of short drawing and not hitting and holding a consistent anchor.
I see that this thread started in 2013. A lot of time has passed since then. Is anyone else using the shot trainer?