With the new patch im holding aggro so good i dont even use a seal half the time heck im even giving my shamans kings instead of salvation

but i spam this macro

/startattack
/castsequence [combat] reset=8 Consecration, holy shield, Hammer of the Righteous

since they all have a cooldown i dont worry about reset=target
i use seal of corruption since it dots the target with holy which does helps holding aggro by hitting each target a couple times to apply

but i rarely use it... cept on bosses then i judge it with judgment of wisdom