Maybe I am over think this, but many times you feel a bump but no hook up on jigging. Then you leave your jig down hoping you can hook up again. A scenario that was popping up and looking to see if anyone can maybe enlighten me with this. With this diagram, if the red fish comes up and the jig is moving away (as the arrow listed) the fish will bump into the line and not get hooked if you are jigging it up (or not hook up).
But on the other hand if the orange fish is sitting and the jig comes up to it, it opens up and swallows it, then there is a 'good chance' of a hook up by theory. Yes? no? I can't see how the red fish can be hooked if the line is in the way and you set the hook. Especially on a flounder.