Or a player on 2B is not automatically advancing ... or when the 3B throws to 1B.
"I make sure that she & the rest of the team all know that, that one was on me."
And I tell all of the parents, immediately.
I agree with your theme of aggressiveness and always looking to take multiple bases but with a runner at 2B and F5 throwing to first, shouldn't F6 have 3B covered for the return throw for an out if F5 does a decent look back?