Ok, I put off getting them. I poped by the shop a long time ago and they were out. I figured my liners have a strap, my boot has a strap, what's the big deal with a Booster strap.
So, I got them put on when I was out last week. I went down some runs at Keystone with Hobbit and at first I didn't really notice much difference.
Then Hobbit at the break reviewed how I was using them and:
1. I left my top boot buckles on tight
2. I put the booster strap over the top of my zip fit liner strap
3. I did not have them on tight enough to have the streched
So, Hobbit helped me correct the top three things so I could stand and flex and feel the progressive give with resistance like you are supposed to with the booster straps. Then we went out and skied.
Why oh Why did I not get these sooner!!!!!!
The feedback for fore/aft balance, the ease of connecting and playing with the transition, the staying in contact with my skis throughout all aspects of my turns, the level of difference is just hard to describe.
What a tremendously fun tweak to the boots!