I'm a new DK tank... new tank completely for that matter. Every char I've ever played has been pure DPS, so it's a whole new ballgame for me. Most of the tanking specs I see posted refer specifically to 10 or 25-man setups, where the environment is quite different from 5-man heroics due to buffs.
My guild isn't raiding yet, and although I pug raids on my dps, I'm going to be doing 5-man heroics for the most part when spec'd to tank. From what I've read, I'm geared well enough to tank 10-man Naxx, so I'm not worried from a gear/stat standpoint, but I definitely need to get my mechanics sound. And also (which is the point of this thread) determine the best tanking spec for 5-man instance runs.
Can someone point me to a good spec for 5-mans in 3.1? I'm not really leaning towards any particular tree since I have no tanking experience at all. I would like a fairly straightforward rotation if possible as I'm accustomed to using macros pretty extensively - but will learn whatever mechanics I need to to be an effective tank. Thanks for any insight you can provide for me into 5-man DK tanking in 3.1!