How do you make "Seduction" effective?

[hoo]

Was experimenting with Arco and its main mages(ores) have the seduction ability. I understand it's against morale and I've tried to seduce both indy and enemy commanders in both my own dominion and other folks dominion. I probably tried somewhere between 10-15 times and I never seduced anyone. Then we went to the assassination stage where things were much more effective.

Anyway, is there a way to effectively use some of the seducers and how to you boost it? Penetration items? I recall also struggling with the seduction power of the Nagas as well.