Legally, you can take this to the Supreme Court, but only if you are able to show monetary loss due to the case and that the incident was done with malice and forethought.
What is the motivation for going into the 3 card monte? Do you have a well scripted presentation that you are just keeping to yourself by covering it up with music?
Seriously, what motivation in the trick is there for a 3cm sequence?
i completely disagree with your statement on the basis of how you describe hoe the classis pass must work. i believe the pass is useful i. some situations, but fundamentally not well enough to use in the middle of a trick as a control without good motivation.
Why not just learn to do the pass decently? The fingers are NOT supposed to move. Check out EATCT and Modern Conjuror. You really are only supposed to grip only with the index and thumb. Keep in mind that it will most likely take you years to perfect a move like the pass.
Even if they don't see the move, why arouse suspicion? If they can't see the pass, then they probably are going to hear it 2 feet away. Then again, I have yet to see very many people do a decent pass.
Maybe C Lang Neil hasn't either.