The following macro allows rogues to blind targets simply by placing thier cursor over them without focusing or targeting them (you can remain focused on your current target) -
/cast [1] blind
This macro can also be used for other abilities similar to Blind, eg Sheep.
Combines both methods of stealthing in one Universal "Time to Hide" Buttonâ„¢:
/cast [2] Vanish; [3] Stealth