Could you use RTLSDR triangulation to hone in on granular lat long of jamming sources?
https://www.rtl-sdr.com/detecting-gps-jammers-in-augmented-r...
https://www.rtl-sdr.com/kiwisdr-tdoa-direction-finding-now-f...
The little five antenna array can even attach on the roof of a car for a handy ground plane. Prob not a good idea to drive with it out there tho.
The only way a gun might be more efficient is in a situation with total air supremacy like Iraq or Afghanistan, and the targets would ideally be in the open.