This comes directly from the Hitec manual:

BODA (Boosted Omni-Directional Antenna) System*
- Hitec’s exclusive 2.4GHz BODA System will show you another means of using the 2.4GHz system. This
single antenna with omni-directional booster makes it a whole lot easier to install the 2.4GHz antenna.
Intensive tests have proven that the single BODA system in our 6 & 7 channel systems is better than or equal
to our competitor’s dual antenna systems. Our Optima 9 receiver features a dual BODA system to give
the added security that larger models need. Installation is easy and simple, just insert the antenna into the
supported antenna holder and stick it to the desired spot you wish to install.

If it were me, I would run the antenna in a straight line directly away from the receiver toward the rear of the aircraft to get it away from the engine and other large metal objects, and secure it in that position.