Warrior Vene’s Quick and Dirty Pre-Naxx Prot DPS Guide gives some tips for when you have to DPS as a Prot warrior. This would also be useful for the daily quest grinds.
EDIT: Do NOT use this for questing. It hugely over values Hit and Expertise against mobs your level or lower. This is only for raiding. Follow Matthew Rossi’s ideas instead for questing or leveling.