Another tactic I like to use are scents. I like to place skunk scent between me and the bait. Maybe a little closer to me. Be warned I have been charged by bears a few times thinking I was a skunk eating his food. They do not tolerate skunks in their food and chase them out. It is funny to watch them try to get out from under the bait with a huge bear hanging over them.
Get as much food scent up in the air as possible. Bring a water bottle of molasses and fling the molasses out of the bottle up into the tree leaves or needles. The higher the better. You can get 5 gallon buckets of it from your local feed mill. You can also bring your own buckets for them to fill. Don’t bring the molasses up into the stand with you for obvious reasons.
Putting bar grease (that’s right – the stuff they cook your food in) in the bottom of your bait for the first few times baiting and over the logs - you can even mix it into your corn / bread mixture. The bears like the taste, but most of all they get it on their paws from moving the logs or digging in the bait. This is important because when they leave they are leaving a scent trail into the woods for other bears to come across to follow back to the bait. The more back tracking bears to the bait the better!
Scent is going to be your biggest ally and also your biggest foe. Try to reduce your scent. Use scent killer, wash your clothes in scent products, don't smoke, try to mask your breath and don't touch evey single thing you come across in the woods.