That works, too, as long as it doesn't fly overhead. Think of the radiation pattern as a big donut dropped around the tip of the antenna. The bent, horizontal position, then, puts that hole to your right and left and but plenty of coverage forward, behind, and overhead so if you keep facing the craft it will never enter the hole where it will not get much signal. Straight up puts that hole overhead which is good if you are at a fixed station and cannot rotate to follow the craft but leaves a weak spot if the craft is directly overhead.