If its a big mob I usually start with shield lob and follow up with like 3-4 flashes to get hate really up and then start the normal combo going from one enemy to another. I also just typically use the <1> marker and that works out fine, when we burn that <1> down I reapply it to the next target. Also, a little trick for when you are having trouble keeping hate is spamming "I think it's savage blade?" one of your attacks gives you more hate. Although spamming this takes away from the normal combo and other actions so I only use this if I have a really hard time keeping up with really good DPS..or if a healer is over healing...either way its my job to keep the hate and take those hits so gotta do what you gotta do