Go to
http://www.uhfmag.com/Features/Feature.html
for some information on the use (and importance) of spikes in a speaker stand.
It doesn't directly answer your question but it's good reading. To answer your question, I'm sure you can find a way to mount the speaker to a stand permanently, but make sure they're good, heavy stands (fillable if possible) or they're going to vibrate when you play music loud enough (as mine do, creating an annoying sound).