Not sure what is wrong with "tinfoil hats aren't enough".
It is meant to be ironic. I usually put it on stuff where there is actually some credibility to the position being taken. There is good evidence for extraterrestials, Big Foot, ghosts, submerged unidentified objects, etc.
Gary Corsair, the
Villages Daily Sun reporter, actually did a several piece article on Big Foot sightings that ran in our paper a few years ago.
These People Have No Doubt They Saw Bigfoot-The Mystery Casebook
Sniper's Adventures: Florida researcher Pat Rance
Man Recounts His Meeting with Bigfoot-The Mystery Casebook