Fight strawmen valiantly. Repeatedly state that 9/11 was not caused by “Arabs in caves”, and that burning jet fuel alone did not bring down the buildings. Accuse your opponents of being George Bush-lovers, and dismiss their evidence accordingly.
Use one myth to support another myth.
“They were going to create a false-flag operation (Northwoods) in the Sixties therefore 9/11 was an inside job”.
“Oswald didn’t kill Kennedy therefore 9/11 was an inside job”.
“9/11 was an inside job therefore anyone who disagrees with me is a disinformation agent”.
“The “New World Order” is a group of shadowy masterminds who control every government and fake every world event, therefore 9/11 was a false-flag psy-op.”
"The Holocaust did not happen so 9/11 was an inside job." "The hijackers were cokeheads and Osama was mortally ill therefore the US gubmint orchestrated 9/11".