tl:dr, but I’d rather spend that money on having a camera (Gopro, Ion, etc) on each of the damn karts to check a reply at race end. If someone has been shoved excessively, it can be protested and proven.
Make the penalties harsh. Very harsh. As in, DNF for rough driving harsh.
Edit: Europeans gotta make their $ right, so start selling front and rear bumpers/fairings with camera mounts in them already.