Thoughts on the circular movement light tube exercise

This exercise seems to be perfect for fixing the last problem that I have: the driftage problem of the lazy eye.  I finally understand what that driftage problem was.  I can move the lazy eye fine--it's just that the motor control that the brain has over that eye is too low resolution.  Coarse movements work pretty well, but small, delicate and precise movements, which are necessary for proper stereopsis still suck quite a bit.  That's what's going on, and that's what the circular movement light tube exercise addresses.

While doing the exercise just a few minutes ago, I noticed that there are a few things that help make the exercise effective.

1. I fix with the normal eye as always, but then I pay special attention to the lazy-eye image. 
2. I try to make the scene as bright as possible. 
3. I pay attention to the way the muscles in the lazy eye feel and then I pay attention to the way that the feeling of the muscles relates to the movements of the lazy-eye image.  I put as much focus as possible on that relationship.  

By doing these things, particularly number 3, I've found that I can substantially cut down on the amount of defusing that's normally seen with this exercise.