How does Tom convince Joe that a pirate's life is better than a hermit's in The Adventures of Tom Sawyer?

This is referring to the start of Chapter XIII where Tom
and Joe meet (and later get Huck) and decide to run away because of how badly they are
being treated.

We don't exactly get told how Tom convinces
Joe.  All were are actually told is this:

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after listening to Tom, he conceded that there
were some conspicuous advantages about a life of crime, and so he consented to be a
pirate.

I think if you look a
bit before the quote and a bit farther down you can see what the advantages might have
been.  Before the quote, Joe wants to be a hermit and get cold and hungry and die. 
That's probably not that much fun.

And then afterwards, you
see all the cloak and dagger stuff they're doing?  They have passwords (Blood!) and code
names and stuff.  It's perfect guy stuff, right?

So I
figure Tom told him that he could go die cold and hungry or he could have fun with
passwords and nicknames.