Originally Posted by
Ripkit
First of all, don't gem str/crit as suggested above. Gem str/haste as UH which I assume you already are. Getting a proc weapon would probably help, but I'd sim it first. The biggest suggestion I can give, which I know 99% of DKs don't know, is to turn 180 degrees away from the boss before you cast gargoyle. A gargoyle has a melée attack that he will use until he gets into position that does substantially less damage than his casted attack. A gargoyle summons 5 yards in front of the caster (right in gargoyle melée range of the boss). Flipping backward will cause the gargoyle to only cast and never melée. Try it. I don't have parses to say any specific numbers of how much of a dps increase it is, but I guarantee it will help. Because as said before, clipping your diseases is usually good. If you see them about to fall off, and you haven't used up the 2 second window on your runes, then definitely wait for them to fall off before refreshing. Also, 15k is not terrible for not having shadowmourne. Don't get bummed by damn fury warriors and fire mages doing 20k plus. It's just not in the cards for us.
Edit: ALSO getting exp capped is NOT mandatory for unholy. Because of the empty GCDs in your rotation, you shouldn't need to be exp capped at the expense of other stats. Ignore most of the posters on this thread.