Ok, so I got to thinking. I know it's bad ( me thinking ) but bear with me.
We know line twist is a nightmare with spinning equipment, so we drag the line out behind the boat to eliminate the twist. Easy enough.

Now, with casting equipment, does line twist really foul things up since the line is basically coming straight into the reel ? I can't say as I have ever seen that dreaded loop in a casting reel like I have seen it in a spinning reel. Even so, I suppose if line twist did become an issue in casting gear, drag it behind to boat too.

Does this theory make sense at all ?