I have a handy Macro that informs people around you who you are sheeping, which comes in handy in instances when the tanks are often unsure who you are trying to sheep when things are a bit chaotic. In a nutshell it helps reduce accidental sheep breakage.
Just copy (ctrl+c) and paste (ctrl+v) the following into the macro pane in WoW:
/script if UnitSex("target")==1 then g="F " else g="M " end;s="Poly "..g..UnitLevel("target").." %T";a=0;if GetPartyMember(1) then c="party" a=1 if GetNumRaidMembers()>0 then c="raid" end;end;if a>0 then SendChatMessage(s,c) end;
/cast Polymorph(Rank X)
Be sure to replace the (Rank X) with the number rank you currently cast.