(*) First, full disclosure: by "Hack" - I mean "Socially Hack" - not steal passwords or anything, but simply offer and derive greater value from you Zoom session (or any other vid-con system)
These days, it seems we all host online video-meetings.
Maybe a business meeting. A family reunion. A drink with friends you haven't seen in a while - online. A workout.
And as host, you have power. You can start the meeting. You can end the meeting.
But most importantly - you can Mute All!
Oh, the sweet power. The ability to make people quiet - and have them listen to you. The power to decide who-speaks-when (and maybe even more intoxicating - who-stops-speaking!).
So the first feature you can use - is your self-restraint. Don't Mute All! At all costs.
Unless it's a lecture, with a pre-defined Q&A session at the end, you want to allow people to talk to you, to each other, to voice thoughts and opinions that may be different from yours. That may sometime be unpleasant - but always will be of greater value than the alternative - rehashing your own ideas over and over again.