Dam Battlegrounds little appts have the toasters, I think that's where you are alluding to.
however, there is one simple trick to avoid Bastions and Rockteers, and that is Smoke Nades, you can craft the "lil smoke" nades and big smoke nades and ARc cannot target you while your in them, this will usually allow you to get to a structure and hide till they go "blue".
the expensive solution are Showstoppers and photoelectric Cloaks, I find these are too narrow, smoke nades also fuck over people trying to shoot you too, you can use them and juke to a location or just use them and heal inside them, they are honestly the most useful items in the game.