no photographs - all non-believers will say in this digital age anything can be doctored
no recordings - will be deemed as outside RF interference or our brains trying to form words from the "noise"
no videos - same outlook as photos
no evps - same as recordings
I think it is impotrtant to distinguish between single items of evidence and "suits" of evidence.
If there were four video recordings, 10 photos and 10 audios of the same phenomena, consistently and unquestionably untampered and from multiple angles etc, it would become very hard to deny. Or at least, a different kind of refutation would be needed than "that image is a hoax.. artifact...etc"