I have last years Sasqy haven't seen the box version.
I am left handed playing from the right side. I never had the proper swivel and flat left wrist ala Yoda. Reading the Aj Bonar articles helped clear the fog as well. He advises to roll those hand/arms as fast and as far as possible. I had to train my left arm to roll on plane. Lots of left arm only swings as fast as possible waist high to waist high with a weighted training club. I am convinced a proper #3 accum can add 30 yds.