I did give a lot of thought to this approaching the 2015 WSFS Business Meeting, what with doomsday scenarios of thousands of people overrunning the meeting and refusing to obey any rules and shouting down anything they didn't like and generally causing chaos. I concluded that a meeting whose members refuse to follow their own rules is not a meeting, but a mob, and I'm not chairing a mob. Had such a thing happened, I would have ordered the meeting adjourned "at the call of the chair" and turned to the convention for help. The convention would then in turn have had to ask the convention security to clear the area, and potentially even call the police if non-members (including any people who had their memberships revoked) refused to leave on their own accord.
Yes, we had Sergeants-At-Arms. They were not going to lay hands upon anyone. Their job was to help organize a law-abiding meeting, not to knock heads together, save perhaps metaphorically.
I don't have any magic bullets or special ways to make people behave. Robert's Rules of Order is a rule book for a complicated live-action role-playing game, not a book of magic spells that will make people obey if they aren't willing to do so. All I can do is enforce existing rules as fairly and evenly as possible. It's up to the members of the assembly to make the game actually work, by being willing to behave in a civilized manner.