I was talking about spellcasting not targeting - I generally use macros for targeting.
EDIT: so for example on a DPS class I'll do something like
#showtooltip
/tar [noharm][dead] focustarget
/tar [noharm][dead] pettarget
/stopmacro [noharm][dead]
/use Arcane Shot
OR
#showtooltip
/tar [noharm][dead] focustarget
/tar [noharm][dead] pettarget
/targetenemy [noharm][dead]
/stopmacro [noharm][dead]
/use Multi-Shot
The 2nd one has to be used carefully though as /targetenemy will go after all sorts of things you don't want to hit, if given the chance.
For heals, I actually use keybound @mouseover macros that let me keep enemies targeted for things like judgment +haste and so forth, while I play whack-a-mole with hover-heals:
#showtooltip
/tar [combat,noexists][combat,dead] focustarget
/use [help,nodead][@mouseover,help,nodead][@focus,exists,nodead][@player] Cleanse
Not expert level stuff but it works well enough for me.
