Meanwhile, Manson still had a small group of loyal believers on the outside, led by Lynette "Squeaky" Fromme, who would later become famous for trying to assassinate Gerald Ford, in a completely unprecedented case of something interesting happening to Gerald Ford. Fromme's group was also aware that Hoyt might testify. So they hatched a plan to silence her permanently. Step one was to offer her an all-expenses-paid trip to Hawaii in exchange for not testifying. Hoyt accepted. Inexplicably, there was a step two and it involved poisoning Hoyt with an LSD hamburger.
Manson loyalist Ruth Ann Moorehouse was sent to Hawaii with Hoyt, with instructions to gauge her mood and report back daily. Apparently it wasn't great, mostly because the paranoid Moorehouse insisted they spend the whole trip hiding inside their suite. Concerned that Hoyt couldn't be trusted, the Manson loyalists launched Operation Salt, Fat, Acid, Heat. The hit went down at the Honolulu airport, where Moorehouse suggested grabbing a burger. She made Hoyt pay (this was a budget poisoning after all), while she went outside with the burger. After Hoyt ate, Moorehouse remarked "Just imagine if there were ten tabs of acid in your hamburger," then vanished.
Hoyt then began to feel increasingly disoriented, forced herself to throw up, and began running in a blind panic, before blacking out entirely on the steps of the Salvation Army building. She was rushed to hospital and treated for a massive overdose. Luckily, the plan had a few problems. For starters, an LSD overdose won't kill you. Secondly, don't tell the victim you're poisoning them. All they managed to do was convince Hoyt to testify, right after they had successfully bribed her not to. Literally her final words before she blacked out were "call Mr. Bugliosi." So good job there guys.