Use proper capitalization - sentences start with a capital letter and the first person pronoun I is always capitalized no matter where in the sentence it occurs. Don't ever double post, just edit your last if you have to add more.
i dont know much about macros, but i would put a mouseover option in there to over ride the focus. that way you focus one tank and mouseover the over. if now focus or mouseover it would cast on pet. i found a macro that does that on Wowiki. but not on my gaming computer to copy and past it.