A camera tripod helps out big time (as long as your meter has threads). Just set it up in the listening area or sweet spot. I found that it helps me produce more consistent calibrations. Then again, I might be too anal .

M80's VP150 QS8's Earthquake SuperNova MKV-15
Integra DTR-7.4 Outlaw 755 Outlaw M200's Outlaw ICBM