My brother was a tugboat pilot, the youngest at that time to ever get his licence, before he was old enough to be one, 21. He had to study every inlet and tributaries on all the rivers. He made great money. He would be on the boat 20 or 30 days at a time, with 10 to 20 days off. He pushed barges down every major river from Kentucky, Mobile to New Orleans. He loved it because he loved being outside and on the water.