A tout is guessing all the time, but a hustler is likely to know something.
He did not wait for business to come to him, he put himself in the path of business; he was a hustler.
In his public speeches he alludes to himself humorously as a hustler.
"I'm a hustler on a dicker, and a hellion on junk," snapped the boss.
His father was a hustler, but the family didn't take after ...