I shot one over bait in 2016, so your hunt is obviously going to be different and more challenging.
They are like ghosts, they are absolutely silent as they move through the woods. I was told that when one showed up at the bait, it would be a shock because it would just appear. Sure enough that was right.
I think more so then scent, hearing is their biggest asset. I hunted 2 days. The first night the bear showed up at 630pm. I went to raise my gun and a squirrel chirped. This alerted the bear and it took off.
If they have been actively hitting a bait they’re like clock work. So the next night, I got my gun up and ready at 6pm. At 630pm on the dot, bear came back in, and I made the kill.
Best of luck and let us know how you make out!