Something that the massive volume of "urban campers" in the Bay Area has taught me is that if you're not being hassled by the cops/locals for sleeping in your vehicle, its not that you've somehow gone without notice, its that nobody cares enough to do anything about it. Folks who put a lot of effort into "stealth" are optimizing for a problem that's comparatively easy to solve (just park somewhere else) if you somehow manage to avoid the worst possible consequence (a parking ticket), while also making themselves more attractive to thieves (who are looking for work vans that have tools they can fence).