The events of this section become increasingly implausible (very unlikely). What might Twain be trying to accomplish through this??
Also, Tom's key revelation during this episode may be considered satirical. Who or what is the target of this satire?
...and with Tom, how has his character contrasted Huck's?(from the very beginning)
Tom's imagination is driven toward the impractical and fantasitc. He wants to ensure that adventure takes place.
Huck, oppositely, uses his imagination for practical ends. He prefers less adventure and more simplicity.
These differences are discussed in the narrative as Huck describes the method by which the plan to free Jim is hatched. The fact that the events become increasingly implausible may serve to heighten the sense that the novel itself is more closely aligned with Tom's type of imagination than with Huck's.