Originally Posted by
DannoXYZ
The trick to using hand-pumps and not busting the valve is to grab a spoke or two next to the presta valve along with the head of the pump. Then any motions introduced with your pumping hand moves both the wheel AND valve-stem in unison. Then there's no movement of the stem relative to the rim.
This is a good tip. Why are the simple solutions so elusive? I bet this method works.