I just finished the morning session, and got the chance to try out a new string at a different tension than I normally play at.
While I'm pretty sure I got the name wrong, the new strings from Pro-Kennex have a to be of repulsion., and makes the smashes a real problem for the opponent.
And they're hard to miss since they are duo-tone.
Tomorrow I will try them again in doubles. Let's see how much harder my smashes will be.