Here's my trick:
Level the first axis with two spikes on one side. (I do this while holding up the other half of the stand to keep it from touching ground)
Then, level the second axis with the third spike.
Then, just put the fourth spike as far down as it'll go without lifting another spike.
Done. Hopefully

Of course, I have hardwood floors (rubber ends on the spikes), so it's easier than trying to drive a spike through a thick rug and pad.