happy to see you man. (and the garden) .
i just had the thought... have you ever considered planting some other species at a guerrila site in advance for boosting your privacy? e.g. some vines? i have no idea if it's viable for you or the places, just an idear.
also, can you/have you modified/trained surrounding vegetation?
when i did my guerilla jungle farm, clearing overgrowth (heh) was a constant task, and tree pruning annual or even semiannual (trees liked my 10-58-35 or whatever it was ). i always had sunday mornings when the "others" were at their church and i was at mine.