Yahoo! First team @ 80!

[universal]

make your tank (nearly) crit immun and just queue as a tank for sometime, instant dungeons + usually high geared healers = easy badges = easy gear

this results in a tank which takes quite some time to die in the "old" heroics. then i'd just queue with the complete team and you should get pretty well through the instances, maybe not in 15minutes but you should be able to complete them :-) doing them on normal during leveling helped me a lot to "learn"/remember what to do on each boss fight :-)