I seldom still hunt, but when I do, its always been for whitetails in Wisconsin. It takes more patience than stand hunting. Because you have to move so slow and fight the urge to see whats over the next ridge. I've worn soft soled moccasins and I've been successful at it and have gotten close to some nice whitetails. But I do it mainly during the rut when they are moving. But the reason for posting this, and it may be of no use to western hunts, but I will often use my foot in the leaves to imitate a squirrel. Either digging in the leaves or rustle the leaves like a squirrel hopping from tree to tree. One whitetail buck I took actually moved into me and bedded down 33 yards away. I moved a short distance to have a shot when he stood. He bedded for an hour and ten minutes before he stood and offered the shot. Squirrels hopped around and it never bothered him, he never even looked in their direction. A tractor was working a field several hundred yards away and only when some metal clanged did he pay attention. So if you seriously want to still hunt, making natural noises will cover any sound you unintentionally make or to relay a sense that all is ok. Maybe out west a crow call or natural sound will aid you.