It will be difficult to hold threat against many classes at level 65. Charge>Rend>Thunderclap(If you have Blood and Thunder), then cleave and tab target through everything else, using revenge as much as possible. If you can convince the DPS to focus fire a target, put a skull on it and put the majority of your efforts on that target.
I also second the suggestion to get TidyPlates Clean Plates.
Also, to the poster above, Blood and Thunder probably sucks at level 65, and at level 80, because the mobs die so quickly. I've found it to be incredibly useful in Stonecore and BRC, however.
Kathy, I said, "I'm lost" though I knew she was sleeping
I'm empty and aching and I don't know why
Counting the cars on the New Jersey Turnpike
They've all gone to look for America