The dragging behind the boat is absolutely the best way to get twist out of mono, fluro, or copoly that is on a spinning reel. ALAS, it doesn't seem to remove twist from nanofil. I don't think the nano has enough body and it is too "slick" for the water to grab and work the twist out of it. I pull the last 4 feet thru my thumb and forefinger (Mr Pointer to his friends) pressed as hard as I can together. Then I go back and pull the last 8 feet thru them, and then I go back and ppull the last 12 feet thru them. This gets the twist down to a managable level in Nanofil. IF you make the mistake of trying to pull all the twist from 12 feet of Nano at once, it will sometimes knot up on you. Hey, I said it wasn't perfect.