'No planes' is a lame argument that always comes across just like 'fake nukes' or 'fake moon'. When you find holes in a story like Apollo 11, it does not mean astronaughts never left the earth. Finding holes in the narrative story of 911 does not mean planes never hit the buildings.
By far the most compelling and 'real' FFmethod to use would be hijacking real planes (or remote control), and actually flying them into the building for all the world to see. This is occam's razor stuff. You could fake it in CGI, you could create a ground panic, you could plant people in the crowd and fake videos from different angles and on and on. Which 1000 times more complicated than just flying two fucking planes into the building. The whole argument is idiotic.
Planes + explosives. Simple, effective, and looks 'real' to the thousands of bystanders. (Mostly) withstands scrutiny on film for the normies. News at 11.