Kinda Scarce publication from 1980.
Very good info.
A lot depends on WHO you select and how to select the person to freely choose a card from a fan of cards as you spread them from hand to hand.
Great psychological advantages to incorporate. I actually learned most of this from years of experience.
Once I did learn this… I improved my method by almost 95%.
Also, if you should miss the force, be prepared to go to a different trick…
I loved this book and you should see Mr. Gertner in action