Burnt,
What the heck is wrong with creative thinking and spooky stories? Especially if that's your forte in the realm of the paranormal. Keel would annihilate Clark on his best day with respect to "old school" ufology. Why? Because Keel was an original and highly imaginative (read: brilliant) paranormal researcher, that ultimately challenged, and prevailed against the mechanistic materialism dogma, of the then present ufological nuts n bolts science fiction study cults run rampant. This being despite tremendous evidence to the contrary, supporting alternate views, via first hand rigorously researched and obtained factual documentation that Keel provided his readership with. Keel was by no means just a story teller, although as an author he's unquestionably a natural. Both Clark and Keel were about facts and determinations of a very finite nature. However it was Keel that found, via his research inspired brilliance, that the assertion that what we were dealing with were space fairing aliens, was one consistent with ludicrous absurdity at best according to the data base of correlated evidence that he had amassed prior to writing Operation Trojan Horse. Believe me, Keel was far from some religious wacko who went around claiming flying saucers were from the pit of hell. That's not the case in the least, and certainly he had no religious angle that I am personally aware of. He cared about what he was conveying deeply, even to the effect that he would not stand down amid the prevailing "windy" pressure systems all around him as they duly voiced their grievances concerning his dangerous views.
Whereas Jerome Clark is a fact compiler. An paranormal experience documenter extraordinaire. The greatest in this sense, which I think him to be actually, doesn't even get a person in the ball park of individuality, let alone originality, and that's precisely what sat Keel so ridiculously far and away apart from MANY other paranormal trail sniffers in his day. It's one thing to comment on the realm of paranormal experiences, quite another to literally create a paradigm shift in paranormal perspective due to rigorous footwork resulting in correlated facts, first hand testimonies, and demographic studies, that lead to some very unorthodox conclusions in the most classic sense possible.