I just watch teams from a distance. Once they get in a fight and one of them seems exceedingly low or they split up, I either snipe them and hide or I cut them off and take out the one that's isolated.
It usually works but for those times where you get too low I just take out one team member and run away to loot up on more stuff.
It usually works but for those times where you get too low I just take out one team member and run away to loot up on more stuff.