What make and model is the antenna (or description including mount)?
The "best" option would be a vertically polarized, half-wavelength type antenna (that does not require a "ground plane" mounting) mounted as far away from the motor/controller as you can and as high as you can. Unfortunately most cases putting a 5' to 6' Marine antenna vertical on the roof is not practical. The best compromise depends on the particular cart, height restriction, mounting hardware, cable etc. WARNING: Do not mount on chassis or connect mount to chassis on golf cart.
I use a 4' Shakespeare fiberglass covered Marine antenna mounted on the front fender within 2' of the radio (passenger side glove box).
There are several options available, but each a compromise. If your antenna is mounted on non-metalic roof and the reception is as good or better than you need, there probably is no reason to move it.
For more info and different points of view, I suggest using the search engine on the main forum page, searching "radio" and/or "antenna", selecting "All Forums" search.