usually stand (more flecible mic-placing.
I do often use clamps though, just to reduce space.
I'll only trigger toms if the drummer brings wrong heads or so (just happened on a project...despite me advice he brought some really shitty sounding skins, I tried to get a decent sound out of them and tuned them to fuck, but in the end I'll have to work with samples I guess....
I hope the day comes when drummers realize that aquarian2 heads must never be on a tom during recording