...but as soon as they were out of sight, the roaring spacecraft set course for the south polar sea

Out of sight from whose point of view? What about all the people tracking it to orbit? What about all the people in Australia who witnessed the TLI burn with the unaided eye?

The moon rocks were made in a NASA geology lab, right here on earth, he continues.

But nobody can figure out a process for it. The rocks we have cannot be manufactured on earth. That's the funny thing: it doesn't matter whether or not they come from the moon -- no matter where they come from, they're unmanufacturable and ought therefore to be assumed of natural origin. And since they can't have naturally formed on earth. Therefore it's far more plausible to believe they're from the moon than from a lab.

Not very many people on the Apollo project knew about the hoax, as they were only informed on a need-to-know basis.

But the "need to know" was huge. You're talking about lots and lots of people who simply can't be kept in the dark, or else they'll become suspicious.

Cash bonuses, promotions, or veiled threats could have ensured the silence of those who were in on the whole scheme.

Cash does not ensure loyalty. There will always be people who try to have the cash and a conscience. Besides, a payoff is only an incentive if you can spend it. Why don't we see key rocket scientists living in multimillion dollar mansions driving fleets of exotic sports cars and traveling the world on first-class tickets? In fact, we see them quite obviously living within their expected means.

Promotions are similarly ineffective. There are always people whose conscience outweighs their greed. Besides, for every person that's promoted there might be someone who is laid off or fired for cause, who might have a motive to get back at his former employer. Kaysing refuses to consider the disgruntled employee scenario.

Threats are more effective, but not totally. They are easily thwarted by deathbed confessions, defection to a foreign power, or letters held by attorneys to be opened in the event of death. None of these has happened.

I have to say whatever universe Bill Kaysing inhabits does not bear much resemblance to the reality where most of us live. Much of what he says is pure fantasy. It's almost frightening the ease with which Kaysing simply lies.