I have a feeling it's because it is coaded for that part of the cv that if you are moving and have hook down, it accelerates you backwards rapidly until you come to a stop. Because the cables are there as decoration and not a real physics object. If you are going forwards (read: landing) and hit that area, it you accelerate backwards, and slow to a stop.
Also, since at the very beginning of taking off on a cv, at the lowest area of the throttle, you actually go backwards, the game reads it as movement, and if you are in that zone with the hook down, it will accelerate you backwards. But instead of stopping since you reach 0 speed, it will keep accelerating you since you wont pass 0 speed, just keep going backwards until you leave the deck, and then splash.
This brings me to an idea that I'll need to try once i get back home. If the acceleration vector is based off the ship's orientation and not the planes, if you take off facing the back of the ship, you might get a slingshot takeoff, which would probably either go great, or very very very badly.