First month of mc training and your best soldier has 25 mc skill. During the next battle you let him jam implant once successfully and after the battle his mc-skill is 26. Instead during that same battle let him jam implant 5 times succesfully and his mc skill after the battle is 29. Let him instead jam implant 50 times succesfully but still after the battle his mc skill will be only 29.
I haven't studied the exact mechanics of this. There's undoubtedly randomness involved. But if you get enough missions during the month you can give your soldiers HUGE mc-skill boosts and STILL receive the MC bonus from the mc-lab at the end of the month. (although it will be smaller because it lowers as your skill gets higher anyway)
This works in xcom 1 too.
EDIT: So the trick is to always toy with the last remaining alien for a while. Keep jam implanting and mind controlling him for a few turns, until all your MC-soldiers have had enough succesfull attacks.
Edited by Yoni, 04 April 2004 - 10:20 AM.