Whatever man. You're making this complicated by using those military areas. Plus, a military area with free WiFi? Who on earth would put a hotspot on a military base or at least near one? You're setting the scenario just for people to agree or at least side on you on this tracker issue.
EDIT:
Sky not that bright? Go during daytime.
Locals can't understand English? Draw your message. Plus this is really a pathetic reason or argument. Show your Pokédex. Point at the Pokémon you want to catch. I can go all day.
Locals know the map and enjoy hunting? Go hunt with them. Gain new friends. Understand their culture.