No trick.
People are allowed to do things in an emergency that they are not allow to do otherwise. Like change a tire. Or wait for a wrecker.
And people can stop in your driveway even if they are not having an emergency. It is not even close to an assault level offense.
They are also allowed to come up your drive and ring the doorbell and you can not attack them at that point either.
I do not understand your confusion.
I’m curious to see how this plays out; Florida seems to still have private property rights.