What Gaff said...most places around here, you leave out on even private land, interlopers will find it and it will be GONE. Public? Not even a question!
When I first got my double bull blind recurve model, I read where someone left theirs out and a snow hit and crushed the fiberglass wands when the weight collapsed the unit.
I then read where someone took a music stand out, set it up, extended the post to center on the roof "hub" and locked it down...kept it from caving in, in wind, heavy rain or snow.
Sure looks like you would disappear for sure.
After cutting the "green" brush, does it last long enough to not be a give away when it turns brown? I'd think down your way, "green" would last longer than up here.