I'm pretty much in there with the others.
I mainly use higher pitched calls, at lower volume, and if you don't sit for at least 30 minutes(an hour is better) perfectly still, you're just wasting your time. I have had bobcats come running in like foxes, but usually I'll see one taking off as I'm starting to stand up. I once had a very big cat sneak in to about 25 yards of me in the snow! They can be extremely sneaky when coming in.
I hunt for them near over grown clearcuts, and along bluffs in the thickets mainly, but have had a couple come across wide open fields from those areas.