brittany, i just got the proxies myself, and we all know there are certain areas in archives that proxies are thrown. and ita a populated area, then u get shot and die and its worthlless. what i have been doing is placing them in oddball areas, where the other team might spawn, and areas kinda out of the way. you may not get the kill right away, but as you make your way around the map, you cover twice as much area and then boom.
this worked best for me in the facility, set it on the far end and then run toward the top side where all the action is.