Hook for HH-9000 Antenna

Having a 4 foot antenna isn't exactly convenient all them time. On my car, it's about 8 feet tall from the ground. This means going through parking structures results in a boing noise and unneeded wear on my antenna. The antenna will fold over, but then it would just swing around as I drive. I made this hook to use along with some rope to keep the antenna anchored while stowed in a horizontal position.

Note: it's a difficult fit on purpose. It just needs a tiny bit of filling to make it come