repeaters would be distinctly easier to geolocate due to increased power and static location. If you have a mobile setup and use radio discipline for brevity, it's harder to direction find you. That being said, if you're broadcasting a whole lot of power, spy satellites will easily geolocate you. low powered localized mesh networks might be optimal if you're trying to do a pirate radio of sorts. But you don't need to be under the radar to practice! Practice in the open with the normies. :)