I've been using the Captains of Crush "Trainer" for about 2 months following the training program in the accompanying literature. I'm 5'6", 145lbs, runner, swimmer, body-weight exercise guy.
On the right, dominant hand I've gone from being able to close it once to close it 5 times (maybe more, but I stopped at 5 for what is next).
On the left, non-dominant hand I've gone from barely being able to close it to closing it, consistently, one time. After that I close it with the assistance of the right hand and then slowly let it out for up to 10 reps. Things are very slow on the left. I have a friend, a very good shooter, who is experiencing the very same thing, but with the 150 lb set.
Any suggestions for helping the left catch up to the right?
happy shooting, Jerry