I'm currently pushing out a quick update to hopefully address the consistency problems with fast hooks. Please share your results in the forums.
I've also added in the initial version of the difficulty selector. Right now, picking an easier difficulty increases the damage from each punch. I want to add in a calibration step that will recommend a difficulty to you, but for now just select a harder difficulty if you find the game too easy, and an easier difficulty if you find it to hard.
You can use the following guidelines to select an initial difficulty. Punch the trainer for awhile with a jabs and crosses to get an idea of the higher end of your straight punch speeds.
less than 4.5m/s: Novice
4.5m/s to 5.5m/s: Amateur
5.5m/s to 7m/s: Semi-Pro
7m/s or higher: Pro
Thanks, everybody!