I little tip for those folks that own mic stands (with round metal bases) that tip over easily :
Next time you're digging around in a garage sale and you see an old weight-lifting set with plastic-covered weights for cheap... buy it.
Then, unscrew the clutch/upper tube assembly from the top of your mic stands and remove it. Take one of the 20 pound weight disks and slip it over the top of the bottom tube and place it on the mic stand base. Put the clutch/upper tube assembly back in place, and you've got an inexpensive weighted stand that should be much more stable, even with a boom and LDC on it.