In Vanilla, you spammed Aimed Shot. Tranqued on a lot of bosses once you got the spell book drop. Class balance was horrible back then and Aimed Shot was powerful enough to one shot anyone when critted or if you had GM/raid weapons.
In TBC, pretty much everyone played BM or token SV for the debuff. All you did was stay in viper using Steady Shot spam and BW. The 3% buff stacked with other hunters in the group, so a lot of raids stacked 4 hunter groups, usually LWs for drums of battle/restoration, and rotated a shaman in that group for lust.