your co-conspirators ... can then be forced to testify against you
How exactly do you intend on forcing them to testify??? Waterboarding them is my choice but I don't think courts like all that drama in the courtroom.

Bottom line is no one can be FORCED to testify. All they have to say is ... I don't remember ... I have no recollection ... etc etc

ignorance is the enemy
without equality there is no liberty