Re: Gaping Hole of Troiyus
Probably much larger and more obvious plot hols would be (1: how the Engine Room was left unmanned so Kryton could sabotage the ship's dilithium, and (2: who the Enterprise didn't carry some spare dilithium crystals as replacements in case of sabotage or breakdown.
"The way that you wander is the way that you choose. / The day that you tarry is the day that you lose. / Sunshine or thunder, a man will always wonder / Where the fair wind blows ..."
-- Lyrics, Jeremiah Johnson's theme.