I use 100% of time cover. (Playing with the wookie companinon) I really focus my dps on one mob at a time. For a typical 2 mobs regular - 1 strong here what i do. I send wookie on the strong one, so he can tank him. I start with aimed shot on one + quick draw. Dead mob. Then i Charged bust instant on one, plus trickshot. (if not, i go with a thermal grenade) Dead mob. Third one, the strong. I debuff his armor, apply the dot, use the smoke grenade, charged burst, trickshot, flurry of bolts, grenade, quick draw. Wookie is generally at 60% hp when all those 3 mobs are down. I rarely go melee.