hey chine I know that it is in relation to the diving force (propellor), just sort of making a comparison, I do not tow from amidships (if I tow at all) but from the stern in a small boat does make steering difficult, because when you turn an outboard powered craft, it sort of moves the rear off line in an arc, unlike a car where the wheels are at the front and steer directly (kind of) so when you have weight on the stern (tow line and towed object) and you try to turn, that is swing the stern out, the weight tries to kep it straight, not overly dangerous, but still tricky. and you havent lived untill you have been on a big Trawler with the tow point high on the stern (gallows) and you get hooked up, holy crap, that is exciting!