The effort drops off sharply because some people have better things to do than fish in empty rivers...right ? I submit that those guys are burning up their cash someplace else when not sitting in a boat. The other "die hard" fishermen are going to keep fishing as long as it's legal. So, if you base fish management strictly on economics, the fish lose... and the sporties lose.

It strikes me as odd when I hear guys beating their chest about this huge economy of sport fishermen.................who can't get anyone interested in their money.