We've never bothered to spend the money on scent lock clothing and we seem to do fairly well using the wind to our advantage.
The best advice I can give ya is be patient, even when a bear comes in to the bait. Give him time to get settled in, and make the first shot count cause you rarely get a second chance.
Your best time to hunt at this time of year is in the evening. Try to be on your stand by 4pm or so. Go in a quickly and quietly as possible cause 99% of the time the bear hitting the bait isn't far away.
If you find, after a couple of days, that the bait is being hit after you leave at night then try a morning hunt. Take special care to be quiet in the morning though cause they'll spook easily and won't come back til after you leave if you give them a reason. You spook them enough morning or night and they'll turn nocturnal in a hurry, then yur pretty well outa luck to catch them at the bait during shooting hours.
Good luck, have fun, and hunt safe!!!